Answer:
Tissues are comprised of cells. Cells are comprised of tissue.
Explanation:
what can a geologist conclude about a limestone rock layer through relitive age
Answer:
The answer is A
Explanation:
I found the answer on a website
Answer:
I think your answer is B.
Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the geologic time scale and dating of formations and rocks relies upon two fundamentally different ways of telling time: relative and absolute.
Relative dating places events or rocks in their chronologic sequence or order of occurrence. Absolute dating places events or rocks at a specific time. If a geologist claims to be younger than his or her co-worker, that is a relative age. If a geologist claims to be 45 years old, that is an absolute age.
Relative Dating
Superposition: The most basic concept used in relative dating is the law of superposition. Simply stated, each bed in a sequence of sedimentary rocks (or layered volcanic rocks) is younger than the bed below it and older than the bed above it. This law follows two basic assumptions: (1) the beds were originally deposited near horizontal, and (2) the beds were not overturned after their deposition.
Faunal Succession: Similar to the law of superposition is the law of faunal succession, which states that groups of fossil animals and plants occur throughout the geologic record in a distinct and identifiable order. Following this law, sedimentary rocks can be “dated” by their characteristic fossil content. Particularly useful are index fossils, geographically widespread fossils that evolved rapidly through time.
Crosscutting Relationships: Relative ages of rocks and events may also be determined using the law of crosscutting relationships, which states that geologic features such as igneous intrusions or faults are younger than the units they cut across.
Inclusions: Inclusions, which are fragments of older rock within a younger igneous rock or coarse-grained sedimentary rock, also facilitate relative dating. Inclusions are useful at contacts with igneous rock bodies where magma moving upward through the crust has dislodged and engulfed pieces of the older surrounding rock.
Gaps in the geologic record, called unconformities, are common where deposition stopped and erosion removed the previously deposited material. Fortunately, distinctive features such as index fossils can aid in matching, or correlating, rocks and formations from several incomplete areas to create a more complete geologic record for relative dating. Relative dating techniques provide geologists abundant evidence of the incredible vastness of geologic time and ancient age of many rocks and formations. However, in order to place absolute dates on the relative time scale, other dating methods must be considered.
Absolute Dating
The nuclear decay of radioactive isotopes is a process that behaves in a clock-like fashion and is thus a useful tool for determining the absolute age of rocks. Radioactive decay is the process by which a “parent” isotope changes into a “daughter” isotope. Rates of radioactive decay are constant and measured in terms of half-life, the time it takes half of a parent isotope to decay into a stable daughter isotope.
Some rock-forming minerals contain naturally occurring radioactive isotopes with very long half-lives unaffected by chemical or physical conditions that exist after the rock is formed. Half-lives of these isotopes and the parent-to-daughter ratio in a given rock sample can be measured, then a relatively simple calculation yields the absolute (radiometric) date at which the parent began to decay, i.e., the age of the rock.
Of the three basic rock types, igneous rocks are most suited for radiometric dating. Metamorphic rocks may also be radiometrically dated. However, radiometric dating generally yields the age of metamorphism, not the age of the original rock. Most ancient sedimentary rocks cannot be dated radiometrically, but the laws of superposition and crosscutting relationships can be used to place absolute time limits on layers of sedimentary rocks crosscut or bounded by radiometrically dated igneous rocks.
Sediments less than about 50,000 years old that contain organic material can be dated based on the radioactive decay of the isotope Carbon 14. For example, shells, wood, and other material found in the shoreline deposits of Utah’s prehistoric Lake Bonneville have yielded absolute dates using this method. These distinct shorelines also make excellent relative dating tools. Many sections of the Wasatch fault disturb or crosscut the Provo shoreline, showing that faulting occurred after the lake dropped below this shoreline which formed about 13,500 years ago. As this example illustrates determining the age of a geologic feature or rock requires the use of both absolute and relative dating techniques.
Explanation:
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Tori
How are the tortoises that Darwin studied on the Galapagos similar to the anoles that Losos studied in the Caribbean
Answer:
Some tortoises, including Lonesome George, have shells that rise in front, like a saddle. This adaptation makes it easier for them to lift their heads high to eat tree cactus and to resolve disputes over limited food resources, which they do through raising their heads as high as possible during social interactions.
Explanation:
Why do so some birds addict to smoke?
Nicotine is absorbed easily through the skin and feathers of birds. The smoke emitted from cigarettes will release nicotine into the air and that nicotine will settle on surfaces. These surfaces include your bird’s cage, bowls, toys and the bird itself. When a bird has nicotine land on their skin from secondhand smoke they will many times pick at their feathers or bite at their feet. Some will bite at themselves to the point that they create open wounds.
Respiratory infections and lung cancers are also a concern for birds kept in an environment where secondhand smoke is prevalent. Pneumonia is a very serious condition in domesticated birds and can lead to death.
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How do you clam and earthworm organs differ
Answer:
The marine clamworm, Nereis, is carnivorous therefore its digestive system differs from that of the herbivorous earthworm, Lumbricus. The mouth and jaws are retractable (Figure 8, 9). If the jaws are retracted, cut along the midline of the pharynx and pull the jaws out with a pair of forceps.
Explanation:
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The membrane surrounding all cells is called
molecules cross it, while keeping other substances in (or out).
because it lets some
O excrete
O semi-permeable
O osmosis
O isotonic
Answer:
I believe that this one is the cell membrane, but double-check.
Explanation:
Explain how the sun’s gravitational pull extends to all 8 planets
Answer:
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Explanation:
hope that helps
The sun’s gravitational pull extends to all 8 planets by the The Sun's gravity pulls the planets in orbit round it, and a few planets pull moons in orbit round them.
What causes the planets to have gravity?A planet's orbital pace changes, relying on how a long way it's far from the Sun. The nearer a planet is to the Sun, the more potent the Sun's gravitational pull on it, and the quicker the planet movements. The farther it's far from the Sun, the weaker the Sun's gravitational pull, and the slower it movements in its orbit.
Even spacecraft are in movement via the sun system, both in orbit across the Earth or Moon, or touring to similarly worlds, due to gravitational forces.
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Sylvite is the best for manufacturing plant use, because sylvite is a key component of fertilizers, hence option A is correct.
What are minerals?Usually created by inorganic processes, a mineral is a naturally occurring homogeneous solid with a specific chemical makeup and a highly ordered atomic organization.
About 100 of the known mineral species the so-called rock-forming minerals make up the majority of the known mineral species, which number in the thousands. On the basis of their chemistry and crystal shape, minerals are categorized.
Metallic and non-metallic minerals are the two categories into which minerals fall. Metallic minerals have luster in their look and are chemically composed of metals. These minerals can be mined to obtain them as a possible source of metal.
Therefore, option A is correct.
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Classify each of the statements and hormone interactions with the appropriate interactive effect.
The missing statements and hormone interactions are:
One hormone opposes the action of another.The effects of insulin and glucagon on blood glucose levelsOne hormone enhances the target organ's response to the second hormone that is secreted later.The effects of estrogen and progesterone on the uterus.The effects of FSH and testosterone on sperm production.Two or more hormones act together to produce an effect that is greater then the sum of their separate effects.AntagonisticOne hormone opposes the action of another.The effects of insulin and glucagon on blood glucose levels.PermissiveOne hormone enhances the target organ's response to the second hormone that is secreted later.The effects of estrogen and progesterone on the uterus.SynergisticThe effects of FSH and testosterone on sperm production.Two or more hormones act together to produce an effect that is greater then the sum of their separate effects.What kind of interactive effects do hormones have?
Hormones have three ways of interaction that affects how a cell can give.
Antagonistic
One hormone has the opposite effect of another one. For example, when glucose levels are high, our body releases insuline so that our body can store it for later. However, when glucose levels are low, our body releases glucagon to release the storaged glocose.
Permissive
The release of one hormone allows the second one to act in a different organ. For example, the hypothalamus releasing TRH, which affects the hypofisis releasing TSH, and his hone affects the tyrod gland, which will produce T4 and T3.
Synergistic
It is an effect that happens when two hormones with a similar effect act together, amplifying their effect. For example, the increasing levels of testosterone and FSH together allow for sperm production.
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Of the following, the most impactful action you can take to reduce your
carbon footprint is:
Answer: C. Eat a plant-based diet
Explanation: Of the following, the most impactful action you can take to reduce your
carbon footprint is: Eat a plant-based diet
Carbon footprint is the emission of the greenhouse gases like carbon. Lights should be turned off whenever not in use can help in reducing the carbon footprint. Thus, option A is correct.
What is a carbon footprint?
The carbon footprint is the amount of carbon, methane, and other greenhouse gases emitted due to natural or man-made activities. It is expressed in the terms of carbon dioxide released into the atmosphere.
The lights should be turned off whenever not in use to reduce the emission of the gases that harms the ozone and environment as the light energy release many greenhouse gases.
Therefore, the lights should be turned off whenever not in use to reduce the carbon footprint.
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A large population of turtles lives on Island A. During a major storm, half of these turtles are washed onto a neighboring Island B. Over millions of years, the two populations diverge, or grow differently, leading to natural selection on the two islands. The two populations of turtles from Island A and Island B are brought back together after another storm. What can be said about these turtles?
What that can be said about these turtles is that Even though they were geographically Isolated, they are no longer two species because they are living together again.
What is population?Population refer to total number of living organisms of species that interact with their environment and living in a same place at the same time.
Therefore, What that can be said about these turtles is that Even though they were geographically Isolated, they are no longer two species because they are living together again.
The question is incomplete because the options were not given but the options was gotten from another website.
They will combine into one population again Even though they were geographically Isolated, they are no longer two species because they are living together again Geographical isolation will have created two new species.Learn more about population below.
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RNA is made because DNA is always in the nucleus,but ribosomes for making proteins are found in the _______
Answer:
Cytoplasm
Explanation:
In eukaryotes, there is a definite nucleus where the ribosome and mRNA production takes place. The ribosomes and mRNA come out of the nucleus into the cytoplasm where the ribosomes work upon and catalyze the formation of proteins. Meaning that in eukaryotic cell, ribosomes make proteins in the cytoplasm.
Explanation:
Ribosome existed in the rough endoplasmic reticulum and existed freely in cytoplasm
A piece of dna that is used to carry a gene of interest into a cell is known as what?.
Plasmid carries a gene into a cell
A piece of DNA that is used to carry a gene of interest into a cell is known as Vector. This is because it is a vehicle that significantly carries foreign DNA molecules into the host cell.
What is Gene?Gene may be defined as a stretch of DNA that has genetic information. It is the nucleotide sequence that has the ability to produce a functional protein or enzyme.
According to the context of this question, a vector is commonly used in recombinant DNA technology. It is a double-stranded, circular extrachromosomal DNA that is separated or detached from the genomic DNA.
It has quite a difference with plasmid. The Plasmid is generally an extrachromosomal element of the bacterial cell.
Therefore, a vector is a piece of DNA that is used to carry a gene of interest into a cell.
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Which neuronal circuit pattern is similar to a positive feedback loop involving neurons?.
The pattern similar to this is called Reverberation
Describe the relationship between rocks and fossils found in the same rock layer.
Answer:
The three concepts are summarized in the general principle called the Law of Fossil Succession: The kinds of animals and plants found as fossils change through time. When we find the same kinds of fossils in rocks from different places, we know that the rocks are the same age. Scientists look for ancestors and descendants through geologic time.
Explanation:
Match the following terms and definitions.
1. oxidation
a chemical reaction in which oxygen is combined with another substance
2. phosphorylation
when a phosphate is added to a molecule
3. dephosphorylation
when a phosphate is removed from a molecule
The oxidation of a substance is the a chemical reaction in which oxygen is combined with another substance. Similarly the phosphorylation is the addition of phosphate group and dephosphorylating is the removal of phosphate group.
What is oxidation reaction ?The oxidation reaction is a type of reaction in which a substance reacts with oxygen or it loss one or more electron to transfer to its higher oxidation states.
The phosphorylation is the addition of a phosphate group (PO₄) into a molecule. Phosphorylation is a very significant combination reaction step takes place in nucleic acids in all living things.
Dephosphorylation is just opposite to the phosphorylation reaction. Here, the phosphate group is removed from the molecule. In some metabolic reactions ATP undergo dephosphorylation to form ADP molecule. Hence, all the terms and definitions are correctly matched here.
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Why is a plant classified as an autotroph
Answer:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.
In a fish, blood circulates through __________, whereas in a mammal, it circulates through __________.
Answer:
fish: blood flows unidirectionally from the two-chambered heart through the gills and then the rest of the body.
mammal: Blood is pumped from veins of the systemic circuit into the right atrium of the heart, then into the right ventricle. Blood then enters the pulmonary circuit, and is oxygenated by the lungs. From the pulmonary circuit, blood re-enters the heart through the left atrium.
Reptiles lay eggs as a means of reproducing, while mammals give birth to live young.
Which statement best demonstrates a reproductive disadvantage of mammals?
O The long development time can be risky for both the embryo and the mother.
O The embryo may be exposed to predators.
O The embryo is protected in the mother, and when it is born, it is usually well developed.
O The offspring are born full size.
Answer:
The long development time can be risky for both the embryo and the mother.
Explanation: The long development time can be risky for both the embryo and the mother.
In roan cattle, red (R) and white (W) are codominant. Heterozygous individuals produce both red and white hairs, known as roan. When two roan cattle are crossed, what are the phenotypic ratios of the offspring
Answer:
1:2:1
Explanation:
To get the phenotypic ratios, first you must figure out the genotype results of the cross. If the two cattle both have RW, then you get 25% RR, 50% RW, and 25% WW.
This means you have 1 fully red cattle, 2 roan cattle, and 1 fully white cattle, or just simplified as 1 (red) : 2 (roan) : 1 white.
The ratio of red to white is 1:1, and the ratio of roan to non-roan is 2:1, which gives the phenotypic ratio of 1:2:1 for red:roan:white.
What is co-dominance ?Codominance is a type of genetic inheritance in which both alleles of a gene are expressed equally in the phenotype of a heterozygous individual. This means that neither allele is dominant or recessive, and both contribute to the observable traits of the organism
When two roan cattle (Rr x Rr) are crossed, the possible genotypes of their offspring are RR, Rr, and rr. The phenotypic ratios of the offspring will be:
25% red (RR)
50% roan (Rr)
25% white (rr)
This is because both red and white alleles are codominant, meaning they are expressed equally in the heterozygous state (Rr) and produce the roan phenotype. The ratio of red to white is 1:1, and the ratio of roan to non-roan is 2:1, which gives the phenotypic ratio of 1:2:1 for red:roan:white.
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Why do some animals migrate in and out of the coniferous forest?.
Answer: Many animals make their home in coniferous forests, some of which have thick fur to insulate them against frigid winters, while others hibernate to endure the cold and some migrate to warmer temperatures.
Explanation:
What is the role of oxygen in photosynthesis and in cellular respiration?
A) Oxygen is used in photosynthesis to produce glucose and is released during cellular respiration
B) Oxygen is released in photosynthesis and used in cellular respiration to produce energy
C) Oxygen is combined with carbon dioxide in photosynthesis to release energy and released from carbon dioxide during cellular respiration
D) Oxygen is released from glucose during photosynthesis and combines with carbon dioxide to produce energy during cellular respiration
The main role of oxygen in photosynthesis and respiration is that Oxygen is released in photosynthesis and used in cellular respiration to produce energy.
Role of oxygen in photosynthesis and respirationIn photosynthesis, water and carbon dioxide reacts to form oxygen and glucose while on the other hand, In cellular respiration, oxygen is used to break down glucose in order to release energy in the form of ATP.
So we can conclude that the main role of oxygen in photosynthesis and respiration is that Oxygen is released in photosynthesis and used in cellular respiration to produce energy.
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What are two strategies China is using to make less of an impact on ecosystems?
Answer:
Two strategies China is using to make less of an impact on ecosystems are:
China has taken steps to dismantle coal-fired power plants, reduce overall emission levels and cut particulate-matter emission rates. Huge progress has been made on air quality, and there are now fewer smoke days in China's largest cities.Why is biochemical evidence the strongest form of evolutionary evidence
Answer:
Biochemistry provides evidence of evolution in terms of modifications in various biological molecules, such as enzymes Explanation:
Answer: Try this Why is biochemical evidence the strongest form of evolutionary evidence
Explanation: It will give you some important information of what you are learning in high school!
A botanist discovers a new plant species in the Amazon rain forest that has blue leaves. Briefly explain what can be inferred about the pigments in the leaves of this plant and the wavelength they absorb
The observation of a new plant species in the Amazon rainforest that has blue leaves can be interpreted as a plant that absorbs all color wavelengths except blue.
What is photosynthesis?Photosynthesis is a group of reactions through which plants can produce simple carbohydrates by using the energy from the sun.
During this process (Photosynthesis), the plant needs to absorb solar radiation in different color wavelengths.
The observation of blue leaves means that the plant cannot absorb this color wavelength during Photosynthesis.
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Compare the relationship between carrying capacity and limiting factors
Answer:
The maximum population size that an ecosystem can support is called carrying capacity. Limiting factors determine carrying capacity. The availability of abiotic factors (such as water, oxygen, and space) and biotic factors (such as food) dictates how many organisms can live in an ecosystem.
Explanation:
Substance A has an LD50 of 3 milligrams per kilogram of body mass for a species of fish. Substance B has an LD50 of 10 milligram per kilogram of body mass. Which substance is considered more deadly?
Substance A
Substance B
They are equally deadly.
This cannot be determined without the ED50.
Answer:
LD50 means a lethal dose of a particular substance or drug is given to a group of animals in a test group. This dose has the ability and capacity to kills 50% of the population of the test group of animals.
If Substance A has an LD50 of 20 mg/kg of body mass, this means that for 1 kg of body mass, 20 mg of substance A can kill 50% of the population that substance A was given to the test group.
If Substance B has an LD50 of 10 mg/kg of body mass, this means that for 1 kg of body mass, 10 mg of substance A can kill 50% of the population that substance B was given to the test group.
Therefore, Substance B is deadlier than Substance A because the quantity of substance B (10mg) is less than the quantity of Substance A (20mg) and it has the same lethal effect on the population.
Explanation:
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Answer:
B
Explanation:
Substance B is deadlier than Substance A because the quantity of substance B (10mg) is less than the quantity of Substance A (20mg) and it has the same lethal effect on the population.
If any Kardashian sister expresses an unknown X-linked recessive trait, what is the probability that her son would also express the same trait
The cranial nerves that innervate the eye muscles are.
What does fossil evidence show about evolution?
Answer:
Answer below
Explanation:
Fossils provide physical examples of what organisms have looked like over time. For example, we can look at giraffes over time, who have evolved to have had long necks. When we look as fossil records of giraffes and similar species, we see that the longer ago that animal lived, the shorter their neck was, and as time progresses, the neck gets longer. However, we also see that in general the giraffes with longer necks, regardless of time period, will have lived longer and healthier lives (we can usually tell this just by how big the fossil is), as with longer necks the animal was able to reach more food and live longer. That giraffe then reproduced and shared their longer neck traits, while those with genetic markings to make their necks shorter will have died before reproducing. Therefore, we can see all forms of evolution through fossils.
Match the picture with the following listings
I’ll give Brainliest if correct
Please
Answer:
Vestigial Structures: Picture on top right (the ostrich)
Anatomical Evidence: Picture in the middle (the multiple animal legs)
Molecular Evidence: Picture on bottom left (the DNA)
Embryological Development: Picture on bottom right (the creature developing and growing)
Fossil Evidence: Picture on top left (the bones)