Scientists can determine the exact age of a fossil by a technique called Radiometric dating. Radiocarbon dating involves the determination of how much carbon is left in the fossil.
In radiocarbon dating, it is possible to determine how much carbon is left in the fossil, by looking at its half-life period.
Radiocarbon dating (also known as carbon dating) refers to the technique aimed at determining the age of a fossil by exploring the properties of a radioactive carbon isotope called radiocarbon.
Radiocarbon or carbon-14 (14C) is a radioactive carbon isotope of carbon that contains 6 protons and 8 neutrons, whose amount in a sample can de be used to determine the age of a given organic material.
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Examine the food web below. Suppose the local government sprayed a pesticide to kill mosquitoes. The sparrows ate the poisoned mosquitoes and died as well. What would most likely happen to the organisms in this food chain after the sparrows began to disappear?
A.
There would be an overpopulation of caterpillars, which would threaten the oak trees.
B.
The sparrows’ disappearance would not affect the other organisms in the ecosystem.
C.
Most of the organisms in the ecosystem would starve and die.
D.
The eagle would loose its primary food source and be forced to start feeding on mountain lions.
Answer:
A. There would be an overpopulation of caterpillars, which would threaten the oak trees
Explanation:
Because sparrows eat caterpillars as a primary food source, when the population of sparrows decrease, the population of caterpillars will increase. Because of this, more caterpillars will be feeding off of the oak trees, therefore threatening the oak trees. I hope this helps!
Ayúdenme plssssss y les doy puntos
Answer:
plato b
Explanation:
Answer:
photosynthesis converts the glucose that is made by cellular respiration to carbon dioxide
Read the sentence. The girl wondered they were standing the grass was so tall. Select the relative adverbs in the correct order to fill in the blanks. where when which, where why, where
A recombinant plasmid molecule is introduced into a bacterial cell by A. recombination B. nuclear transplantation C. ligation D. transformation
Where does meiosis occur in male and female?
In order for mutations to be passed to offspring in sexually reproducing organisms, the
mutation(s) must occur in sex cells. Why is this NOT true for bacteria like Staphylococcus?
Choose one or more:
Answer:
Bacteria can evolve quickly because they reproduce at a fast rate. Mutations in the DNA of bacteria can produce new characteristics and that the bacterium will grow better than its neighbors and can increase in numbers..
Explanation:
N/A
In what parts of the body would you expect oxyhaemoglobin to be breaking down to oxygen and haemoglobin ?
Answer:
Haemoglobin binds with oxygen in body locations where the oxygen concentration is high (in the lungs) and forms oxyhaemoglobin. Blood with a high concentration of oxygen is described as oxygenated
What designs the shape and size of all animals that are multi-cellar and have a back-bone
Answer
Environmental pressures
Basically every animal adapts to pressures from their environment in different ways, causing them to have different shapes and sizes
if the dna sequence is TAC CCC AAG CTC GGT ATC. what is mRNA
tRNA
AA?
The mRNA sequence would be:
AUG GGG UUC GAG CCA UAG
The mRNA sequence is complementary to the DNA sequence, in other words would just basically mean you do the opposite of the bases to the DNA sequence such that:
Cytosine with Guanine
Thymine (uracil for RNA) with Adenine
However, mRNA has Uracil instead of Thymine, so instead the uracil in mRNA binds with adenine.
Urcacil with Adenine
For tRNA, they have anticodons, meaning they have bases complementary to the mRNA strand, so the tRNA with the complementary anticodon sequence would be:
UAC CCC AAG CUC GGU AUC (DNA sequence but replace thymine with uracil)
For the amino acids, they would bond to the specific tRNA molecules with the specific bases on the anticodons.
Whatcha are the three cells of the cells theory
Answer:
2 and 3 are the other ones
Explanation:
What is Not a correct statement about chromosomes,Dna,or genes
Image below
Explain how natural disasters can change the characteristics of a species for many generations after the disaster. To develop this discussion you will need a minimum of 2 paragraphs.
Answer:
Strong volcanic eruptions and fires can temporarily change regional weather, cooling or heating the air, changing winds, or causing rain. Volcanoes, storms, and floods can kill marine animals directly, or cause long-term problems by depositing debris and affecting the temperature and salinity of water.
Natural disaster especially such as forest fires and hurricanes have the potential to threaten these endangered species to the point of extinction. ... The fires destroy the animals habitats including their homes, nesting grounds, food, and winter shelters.
After a natural disaster, the community will often go through ecological succession and return to the state it was pre-diaster. Healthy ecosystems will bounce back, as natural disasters have occurred on earth for a long time. ... Healthy ecosystems are adapted to withstand natural disasters over the long time.
Which of the following are functions of an animal's movement structures like wings, legs, or fins? Select the two correct
answers. (1 point)
identifying food
keeping out bacteria and viruses
migrating to mating spots
o escaping from predators
protection from elements
The legs, wings, or fins most of the time are used in locomotion and sometimes in defense.
These are two functions of an animal's movement structures like wings, legs, or fins:
migrating to mating spots escaping from predators.These structures are like structural adaptation defenses. These structures might be for defense, movement and for obtaining resources which might include food.
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Answer:
migrating and escaping predators
Explanation:
ASAP plz
Describe hurricanes and explain how these storms affect human behavior?
It was a lovely dinner-party of fourteen. The Duke and Duchess of Shoreditch, and their daughter the Lady Anne-Grace-Eleanor-Celeste-and-so-forth-and-so-forth-de-Bohun, the Earl and Countess of Newgate, Viscount Cheapside, Lord and Lady Blatherskite, some untitled people of both sexes, the minister and his wife and daughter, and his daughter's visiting friend, an English girl of twenty-two, named Portia Langham, whom I fell in love with in two minutes, and she with me—I could see it without glasses. There was still another guest, an American—but I am a little ahead of my story.
A.
the long list of names required to address certain nobles
B.
the English custom of holding frequent balls and dinner parties
C.
the lack of importance given to Americans by the English
D.
the eccentric attitudes of the British upper class
Mark Twain satirizes the long list of names to refer to some noble people.
Satire is a common literary element in Twain's texts. Twain often uses satire as a way to ridicule the attitudes and behavior of some people, especially wealthy or noble people.
In the excerpt presented, Twain is satirizing the long names of noble people. This is seen in the following excerpt:
Their daughter the Lady Anne-Grace-Eleanor-Celeste-and-so-forth-and-so-forth-de-BohunIn this excerpt, he jokes about the long name of one of the guests and shows how ridicule is to have these very long names.
Note: This question is incomplete because the question statement is missing; here is the missing section:
What does Mark Twain satirize in this excerpt from "The £1,000,000 Bank-Note"?
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Which group of elements is provided by air and water?
Answer: Over 95 percent of the dry weight of a flowering plant is made up of three elements—carbon, hydrogen, and oxygen—taken from the air and water. The remaining 5 percent of the dry weight comes from chemicals absorbed from the soil.
Explanation:
b) Give an example of an animal with radial symmetry and an example of an animal with bilateral
symmetry. (2 points)
Answer:jellyfishes, corals, anemones, and ctenophora.
Explanation:
Examples of animals that possess bilateral symmetry are: flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.
Plant and Animal Cells
Which part of the cell is responsible for controlling the activities of the other parts of the cell?
O Nucleus
O Cell Membrane
O Vacuole
Answer:
Nucleus
The nucleus controls all the activities that happen in the cell
Which of the following is not a reason some groups doubt global warming is occurring?
A) Some groups argue carbon dioxide is an insignificant greenhouse gas.
B) Some groups believe water is a worse greenhouse gas than carbon dioxide
C) Many think global warming is a form of media alarmism
D) A majority of scientists believe in the theory of global warming
Answer:
A
Explanation:
Some groups argue carbon dioxide is an insignificant green house gas.
Answer:
D) A majority of scientists believe in the theory of global warming
Explanation:
Edge 2022
Scientists believing that global warming is real is not a reason why people doubt global warming is occurring...
Humans pump water out of the aquifers in the ground to use in their homes. How would this effect the land on top of the aquifer?
If you cross two organisms that are heterozygous for a trait, what percent of
the offspring would you expect to express the recessive phenotype?
Answer:
25%
Explanation:
Here's an example: two chickens have the phenotype of white feathers and brown feathers. What percentage of the chicks will have the recessive color? First, you have to see the parents' phenotypes. Draw a punnet square. Put one of the parent's phenotypes (w and B) on the top, and the other parent's (w and B) on the right side going down. Whichever trait is dominant (brown) MUST be capitalized. Then, cross the two parents. first box on the top left would read 'ww.' The one below it is 'Bw' (put the dominant first). The right top is 'Bw' and the one below it is 'BB'. So if there were 4 offspring, these would be their genotypes: 'ww', 'Bw', 'Bw', and 'BB'. The only offspring that would have the recessive trait is the 'ww' child, because dominant overpowers recessive. So 25% would have the recessive trait and 75% would have the dominant trait.
Crabgrass, also known as digitaria sanguinalis, is a stationary multicellular species that belongs to kingdom Plantae. According to the table below which of the following species is most closely related to digitaria sanguinalis?
Answer:
Quercus
Explanation:
Match the characteristic
Movement
Reproduction Sensitivity
Growth
Respiration Excretion
Nutrition
1.Getting rid of
waste.
o
o
o
o
o
0
o
o
The ability to
produce
offspring to
keep the
species in
existence.
O
o
0
O
o
The process
increasing
hysical
O
o
o
o
o
Explanation:
Excretion - Getting rid of
waste
Reproduction- The ability to
produce
offspring to
keep the
species in
existence.
Growth- The process
increasing
hysical
What stage of cell respiration is being shown above?
The stage of cell respiration that is being shown above is oxidative phosphorylation. During this stage, the transport of electrons is coupled to the generation of an electrochemical gradient.
Cellular respiration can be defined as a series of metabolic reactions by which aerobic cells generate energy in the form of ATP.
Cellular respiration has three main stages: glycolysis, the Krebs cycle and oxidative phosphorylation.
During oxidative phosphorylation, the transport of electrons across the mitochondrial membrane is coupled to the generation of an electrochemical gradient, which is then used to generate ATP by an ATP synthase as shown in the figure.
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Abagnale's life could best be paraphrased as...
Answer:
running from the law and later working for the law.
Explanation:
Frank Abagnale Jr. is the clear example of a boy who makes mistakes when trying to progress quickly without caring about his crimes, among which are the falsification of documents and checks, as well as the illegal practice of professions, which is why which during his youth had to flee from justice, however, due to the expertise he obtained after creating many false checks and his criminal journey, the American government gave him the possibility of working with them, contributing his knowledge of possible techniques fraud and help counter it, which was paradoxical considering his background.
How is it possible to find the
number of heterozygotes in a
sample population, given the
allele frequencies?
Explanation:
The frequency of heterozygous individuals. Answer: The frequency of heterozygous individuals is equal to 2pq. In this case, 2pq equals 0.32, which means that the frequency of individuals heterozygous for this gene is equal to 32% (i.e. 2 (0.8)(0.2) = 0.32
To find the number of heterozygotes in a sample population, we need to know the allele frequencies and the total number of individuals in the population. The formula used to calculate the expected number of heterozygotes in a population is based on the Hardy-Weinberg equilibrium principle.
The Hardy-Weinberg equation is given as:
p² + 2pq + q² = 1
Where:
p = frequency of one (dominant) allele
q = frequency of the other allele (recessive) allele
p² = expected frequency of homozygous dominant individuals
2pq = expected frequency of heterozygous individuals
q² = expected frequency of homozygous recessive individuals
To find the number of heterozygotes, we can multiply the expected frequency of heterozygotes (2pq) by the total population size. This will give us an estimate of the number of individuals in the population who are heterozygous for the specific gene of interest.
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Which of the following show similarities between organelles and organs of the body?
Answer:
Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.” In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.
Explanation:
Detail the locations and fate of a glucose molecule in a French fry from the time you swallow it until it gets turned into CO2 and water in the mitochondria of a muscle cell in the lower leg.
Then discuss the locations and fate of the CO2 and water molecules as they leave the mitochondria until they eventually leave the body.
Answer: the glucose is a weird circle thing and a french fry is a food.
Explanation: not really understanding the question here...
Which instruments has indefinite pitch
10. If the red allele is incompletely dominant to the white alle
individual's phenotype be?