There were no coal deposits formed during the Precambrian period because there wasn't enough carbon dioxide in Earth's early atmosphere.
What is the Precambrian?The Precambrian is a Super Aeon, corresponding to the time period from the formation of the Earth (~4.6 billion years – b.a.) to the beginning of the Cambrian Period (~542 million years – m.a.).
With this information, we can conclude that there were no coal deposits formed during the Precambrian period because there wasn't enough carbon dioxide in Earth's early atmosphere.
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The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution. homology. convergent evolution. analogy.
The amniotic egg, which is present in animals such as reptiles, birds, and mammals, is a good example of homo-logy.
What is homo-logy?The term 'homo-logy' makes reference to the same evolutionary origin (ancestor) for a given structure.
A structure and/or sequence is homo-logous when it derives from the same evolutionary ancestor.
Conversely, an analogy means that the structure and/or nucleotide sequence do not share an evolutionary origin.
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Which of these types of fertilizers is the best for maintaining the long-term health of farm soil? (select all that apply) organic matter compost chemical fertilizers water, i have no idea what subject this is in so i put biology.
Answer:
water, compost , and chemical fertilizer
Water, compost , and chemical fertilizers is the best for maintaining the long-term health of farm soil.
What do you mean by chemical fertilizers?Chemical fertilizers, such as urea, diammonium phosphate (DAP), and single superphosphate (SSP), are used to maintain the shortage of nitrogen, phosphorus, and potassium in the soil.
Most fertilizers that are commonly used in agriculture contain the three basic plant nutrients: nitrogen, phosphorus, and potassium. Some fertilizers also contain certain "micronutrients," such as zinc and other metals, that are necessary for plant growth.
Chemical fertilizers will nourish your plant, but the minerals will not linger in your soil. By creating rich, nutrient-dense soil with organic materials, your lawn will have a better chance of thriving on its own tapping into stored minerals when needed.
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Consider three independently assorting gene pairs, A/a, B/b, and C/c, where each demonstrates a typical dominance (A-, B-, C-) and recessiveness (aa, bb, cc) relationship. What is the probability of obtaining an offspring that is triply dominant from parents that are AaBbcc and AaBbCc
Assuming complete dominance and following the product probability rule, the probability of obtaining an offspring that is triply dominant AABBCC is 1/32.
What is complete dominance?
We talk about complete dominance when the dominant allele completely masks the recessive allele. It is an inheritance pattern.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant phenotype. The dominant allele is hiding the expression of the recessive allele.
Many genes show complete dominance.
In the exposed example, we need to cross AaBbcc x AaBbCc and calculate the probability of getting offspring that is triply dominant. To do it, we will follow the product probability rule.
What is the product probability rule?The product probability rule allows us to calculate the probability of occurrence of event A and event B at the same time.
It is about a joint probability of two or more events that might happen simultaneously, not excluding each other.
This rule is based on the dependence or independence of the events. If two events A and B are independent of each other, the occurrence of one of them does not affect the occurrence of the other one.
For independent events, the rule establishes that, given two different events A and B, the probability of occurrence of both together is
P(A∩B) = P(A) x P(B)
Since these are independent genes, for easier calculations, we can perform crosses that involve each of the genes separately -events-, and then multiply de results according to the genotype we are interested in (AABBCC).
Gene A
Parentals) Aa x Aa
Gametes) A a A a
Punnett square) A a
A AA Aa
a Aa aa
F1) 1/4 AA
1/2 Aa
1/4 aa
Gene B
Parentals) Bb x Bb
Gametes) B b B b
Punnett square) B b
B BB Bb
b Bb bb
F1) 1/4 BB
1/2 Bb
1/4 bb
Gene C
Parentals) cc x Cc
Gametes) c c C c
Punnett square) C c
c Cc cc
c Cc cc
F1) 1/2 Cc
1/2 cc
The probability of getting and individual with genotype AABBCC is
P(AABBCC) = P(AA) x P(BB) x P(CC)
P(AABBCC) = 1/4 x 1/4 x 1/2
P(AABBCC) = 1/4 x 1/4 x 1/2
P(AABBCC) = 1/32
The probability of obtaining an offspring that is triply dominant AABBCC is 1/32.
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Tall oak trees are better able to compete for sunlight in crowded forests. short oak trees are at a
disadvantage. what type of selection appears to have made oak trees grow tall?
a. stabilizing selection
b. directional selection
c. disruptive selection
The type of selection that makes tall oka trees a better competitor for sunlight over short ones would be directional selection.
What is directional selection?It is a kind of natural selection in which individuals with traits at one extreme end of the population are better adapted to the environment.
In this case, tall and short oak trees are at the two extreme ends of the population mean with tall oak trees being able to better competitors for sunlight than the short ones.
The selection is, thus, directional, towards the tall trees rather than the average or the short ones.
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A normal haired man marries a normal haired woman, but they have a son who develops baldness. Explain how the son inherited this disorder and from who he inherited the trait.
Explanation:
maybe the mom or dad's dad was bold and it skipped a generation
What happens in the netlike structure labeled B in the diagram?
(A) Carbon dioxide and oxygen diffuse into the blood
(B) Nitrogen and oxygen are exchanged,
(C) Carbon dioxide and oxygen are exchanged,
(D) Nitrogen and carbon dioxide remain constant,
In multicellular organisms, the process of cell division leads to _________.
A. a decrease in cell number
B. an increase in cell number
C. the death of many cells
D. a destruction of all cells
Answer:
B. An increase in cell numbers
Explanation:
It adds more cells for cell divison they increase in numbers.
-Hope This Helps!
-Justin:)
Answer:
B. Increase in cell Number
Explanation:
Cell divisision is the process in which a cell divides itself to create new cells. Therfore increasing the cell number.
Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because _____. gills have less surface area than lungs water contains much less oxygen per unit volume than air water is less dense than air gills collapse in air gills allow only unidirectional transport
Answer:
Land animals breathe air.
Explanation:
In what areas of the world is biodiversity the lowest?
tropical regions
polar regions
temperate regions
ocean regions
Answer:
Polar regions
Explanation:
Because plants don't survive in the extreme cold and ice that cover these regions year-round.
Due to their intense and harsh environmental circumstances, polar regions like the Arctic and Antarctica often have the lowest levels of biodiversity. So, the correct option is B.
What is Biodiversity?The term "biodiversity", which is short for "biological diversity", describes the range of living things and ecosystems that exist on Earth. It includes a wide range of species, genetic diversity within those species, a wide range of environments, and a range of ecological processes. Humans benefit greatly from biodiversity as it provides them with food, medicine and ecological services such as pollination and water and air purification.
Because of their intense and harsh environmental conditions, polar regions such as the Arctic and Antarctica often have the lowest levels of biodiversity. These regions have a relatively limited diversity of species because the cold and dry conditions make it difficult for many species to live. Furthermore, these areas often have low population density due to the severe environment and scarce resources.
So, the correct option is B.
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Which of the following is NOT true about systems that cycle matter?
A Living things play a role in the cycling of matter.
B Matter changes form as it cycles.
C Some matter is destroyed as it cycles through the environment.
D Matter is constantly cycling through the environment
Answer:
Matter
Explanation:
Matter makes up all visible objects in the universe, and it can be neither created nor destroyed.
Answer:
The Answer That Fits The Best Is (D, 4rth) One
One species of tree snail is found on a single island in the pacific. A storm knocks down one tree that contains 50 snails and it drifts at sea for a week before coming ashore at a nearby island. The snails make it to shore and over time evolve into a new snail species. This is an example of:.
Answer:
the theory of evolution is the answer
A shorter orbit around the Sun means _____.
Question 2 options:
A shorter day
A shorter year
Fewer moons around the planet
Describe the theory of evolution in your own words. How does this theory relate to the principle of natural selection?
Answer:
The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.
Explanation:
Original Question:
Describe the theory of evolution in your own words. How does this theory relate to the principle of natural selection?
Answer and Explanation:
Evolution means the adaption of animals, plants, species, etc. This study ties in with the theory of humans being descended from other animals; specifically chimpanzees. Over the course of time, Animals are believed to adapt to the environment they live in. One common example would be giraffes. In the past, they used to have shorter necks that couldn’t the leaves in a tree. Throughout the years, many breeds tended to have offsprings that had long necks. That is why giraffes have longer necks now.
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Side note: You might want to change your wording if you decide to use my answer. It would be considered plagiarism. I know it might be late but I hope this helps in future reference. Hope I helped!
You apply a force of 10 newtons on an object and make it move 10 meters. How much work was done?
100 J
100/ms
100 g
100 w
Answer:
here
Explanation:
force (F)=10N
distance (d)=10m
work=F×D
=10N × 10m
=10N/M
=10 j
What is the primary physical characteristic of the Middle East?
Answer: The Middle East region represents an area of over 5.0 million square miles. The physical geography of the Middle East is varied. Vast deserts are common in the region. The Sahara Desert runs across North Africa, essentially limiting settlement to along the Mediterranean coastline and in Egypt along the Nile River.
Explanation:
The national wildlife refuge provides land for fish, wildlife, and plants. please select the best answer from the choices provided t f
The national wildlife refuge refers to protected areas of US managed by United State and wildlife services. They provide land for fish, wildlife and plants.
What is national wildlife refuge?The National Wildlife Refuge System is the system of public lands to conserve America's fish, wildlife, and plants.
The National Wildlife Refuge Association manage the integrity of the National Wildlife Refuge System with advocacy, restoration and research. The National Wildlife Refuge System is visited by nearly 50 million visitors each year.
Thus, this statement is true.
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Nathan is comparing the cells from a species of amoeba with a species of bacteria. Both species are unicellular, meaning individuals exist as a single cell. Which characteristic of the cells should Nathan expect to be the same in both species?
A. The size and shape of the cell
B. The method of reproduction, or making more cells of the species
C. The organization of DNA into structures such as chromosomes and the cell nucleus.
D. The genetic code that has used by DNA and RNA to direct protein synthesis
Given what we know, we can confirm that Nathan can expect the means of reproduction to be the same in both species, meaning that the correct answer would be option B.
Why is option B the correct choice?When dealing with unicellular organisms, many aspects will always remain the same between the distinct species. One such aspect is the reproduction method used universally by all unicellular species, that being reproduction through binary fission. The organism replicates its DNA and then divides into two identical cells.
Therefore, we can confirm that Nathan can expect the means of reproduction to be the same in both species, meaning that the correct answer would be option B.
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HELP PLEASE!
Explain the Linnaean system of classifying organisms.
Answer:
The Linnaean system is based on similarities in obvious physical traits. It consists of a hierarchy of taxa, from the kingdom to the species. Each species is given a unique two-word Latin name. The recently added domain is a larger and more inclusive taxon than the kingdom.
Explanation:
brainleist please
which statements best compare the function of an ATP molecule to a DNA molecule
ATP helps in muscle contraction, active transport, formation of lysosomes, etc., while DNA carries all the genetic information related to an organism.
What do you mean by DNA molecule?The DNA molecule may be defined as the molecule that carries the genetic information for the development and functioning of an organism.
ATP delivers energy for chemical reactions in the cell. DNA maintains and communicates the genetic information of organisms.
Therefore, the above statement that best compares the function of an ATP molecule to a DNA molecule.
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What causes the heart's lub dub sound?
A. capillaries moving blood between arteries and veins
B. arteries delivering oxygen rich blood to the rest of the
body
C. valves opening and closing while returning blood to
the heart
D. lungs oxygenating blood and exhaling carbon dioxide
Answer:
The answer of this question is the opening and closing of the heart valves of the heart valves. I believe that the answer is C, or "valves opening and closing while returning blood to the heart"
(04.03 MC) Which description properly describes a step involved in cellular respiration?
A. Glucose is created, then the energy gained is transferred to the energy molecule.
B. Carbon dioxide and water are released after the energy molecule is charged.
C. Water is divided into carbon dioxide and glucose.
D. Oxygen is combined with ATP to energize it.
Answer:
B
Explanation:
How long ago did the first animals adapt to living on land?.
Answer:
440 - 410 million years ago
Explanation:
Whatever their origins, animals may have ventured onto land early in the Cambrian. Previously scientists believed that animals did not begin to colonise the land until the Silurian (440 - 410 million years ago).
Imagine you are studying a newly discovered animal species. You discover large numbers of only very young juveniles of the species inhabiting the same area. What can you conclude about the reproductive behaviors of the species? Why?
Answer:
the animals reproduce whilst young and produce a large number of offspring in a short period of time
At the superior end of the esophagus, the superior esophageal sphincter is a thickened ring of ______ muscle marking the area where the esophagus and the pharynx meet.
The superior esophageal sphincter is a muscular ring that separates the pharynx from the esophagus, has voluntary activity and is responsible for initiating swallowing.
What is the superior esophageal sphincter?
It is located immediately after the pyriform sinuses, it is a muscular ring located in the high pressure area between the pharynx and the esophagus.
This prevents the passage of air into the digestive tract during inspiration and the reflux of gastric material into the pharynx, relaxing to open the esophagus.
In order for a muscle-building athlete to keep muscles in good shape, it is necessary to synthesize more muscle protein than is consumed, which is known as nitrogen balance..
Therefore, we can conclude that the superior esophageal sphincter is a muscular ring that separates the pharynx from the esophagus, has voluntary activity and is responsible for initiating swallowing.
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According to scientists, the organisms in the picture all evolved from a common ancestor. What evidence backs up this theory? Question 1 options: The appendages of these organisms share similar function. These organisms contain very similar bone anatomy. These organisms are all of the same species. These organisms all lived in similar habitats and were therefore under similar environmental pressures.
Explanation:
These organisms contain very similar bone anatomy. i think that's it
Why are copper used in motors (proper para please )
Answer:
They do such a great job of conducting the electricity and power through the appliance they are used in.
Explanation:
Select all of the following that are TRUE regarding prokaryotic and eukaryotic cells.
prokaryotic cells have a nucleus, eukaryotic cells have a nucleiod a
region
Both cells contain the organelle the ribosome
Eukaryotic cells have mitochondria; prokaryotic cells do not
Eukaryotic cells contain DNA; prokaryotic cells do not
Both cell types contain membrane bound
organelles
come up for the brainiest championship
Answer:
Explanation:
Look at the number lines below.
Two number lines are shown. The first number line shows zero, one-half, and one. The second number line shows zero at the same place the first number line shows zero, one-fourth, two-fourths at the same place the first number line shows one-half, three-fourths, and one at the same place the first number line shows one.
Which fraction on the bottom number line is equal to
1
2
?
A.
3
4
B.
All are equal to
1
2
.
C.
2
4
D.
1
4
In your own words, write a paragraph that explains how evidence since Darwin's time has
strengthened his theories
Answer:
Charles Darwin proposed one of the theory of evolution which can still be observed till date in organism.
Organism have numerous offsprings and only the offspring with characteristics to overcome unfavorable conditions survive and passes such genes to their offsprings
In plants, the vascular tissue made of dead cells that transport water and minerals from the roots is called.