The answer is D. The natural selection is a theory which illustrates the gradual process of evolution in the population due to the change of environment. The key point is the mutation (variation) exists in the population before the environment changing. For C, if the environment does not change, though the adaptation is useful to environment, it will not be selected. Because the organisms without the adaptation will not die.
Answer:
THATS CHEATING NO CHATING IN THE TEST NO NO ITS AGAINST COMMUNITY GUIDELINES!
Explanation:
She should use as large a sample size as possible because she vets more data. S he also repeat this at least twice to get accurate data
Answer:
Options (1), (2), (3) and (4)
Explanation:
Mid oceanic ridge is the region along the spreading of the sea floor occurs. Along this ridge, the magma come out to the surface, and lava forms<u> pillow shaped rocks such as pillow basalt</u>. Basalt is the dominant rock type in the oceanic crust.
There occurs<u> striped patterns that are oriented parallel mid oceanic ridge</u>, and this strips depicts the magnetic field of the earth, and it keeps on changing on each eruption of this magma beneath the ocean long this ridge.
The mid oceanic ridge suggests the <u>spreading of the sea floor</u> and the rocks present at this ridge are younger than the rocks that are away from the ridge.
This rocks are comprised of the <u>molten iron material</u> that are present in the mantle and suggest the magnetic field of the earth during the time of eruptions.
Hence, the correct answers are options (1), (2), (3) and (4).
Answer:
Damaged DNA causes an increase in the number of mutations in the cell: this is extremely dangerous for the body and in fact this process is at the basis of the birth of cancer cells.
To avoid this, the cell is equipped with some molecular protective systems including the activation of the p53 protein. p53 induces recruitment of DNA damage repair systems and stops cell replication until the damage has been repaired. If the damage cannot be repaired p53 induces cell death through apoptosis
