They come from crementation which is when disolved minerals are deposited in tiny spaces...
Answer: The answer is option C
Explanation:
Option c- Beta carotene had not yet been absorbed by the body in sufficient quantities to influence the amount of vitamin A being produced. Beta carotene is an organic, red-colored pigment that is found to be abundant in plants and fruits. it is a member of the Carotenes. Beta carotene is an inactive form (precursor) to vitamin A.
Based on the given conversation above between Ben and his parents, the testable question for the hurricane research of Ben is option C: "Is the number of hurricanes increasing each year?" This is the testable question since they are arguing about the number of hurricanes in the past summers. Hope this helps.
The structures in the cerebral cortex that are involved in hearing, language processing, and memory are called the Temporal lobes.
Cerebral cortex- The cerebral cortex, the brain's outer layer, is linked to higher-order cognitive functions such as awareness, cognition, emotion, reasoning, language, and memory. There are four lobes in each cerebral hemisphere, each of which has a specific purpose.
Temporal lobes- The temporal lobe is a part of the brain that controls various parts of language as well as hearing, memory, and emotion. It is situated on the side of the head.
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Answer:
The correct answer would be 30 million years.
The molecular clock is a technique used to determine the time when the two species diverged from a common ancestor. It uses the mutation rate to determine the same.
Mutation rate is the rate at which a number of mutations take place in a given unit time.
For example, the mutation rate in a given question is one mutation per 10 million years, that is, one nucleotide is mutated in 10 million years.
If we compare the DNA sequence of the given two species, we would find that three mutations have taken place.
Species A: CTTAAGCTAGTAAGGACC
Species B: CATAAGTTAGTAAGGTCC
Thus, 30 million years would have passed to evolve three mutations.
Hence, they must have shared a common ancestor around 30 million years ago.
