Petrochemicals include many things, I would say All of the above. Hope this helped! :)
Answer:
The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits.
Explanation:
Answer: i dont know but i am on there too
Explanation:
Answer:
Option (B).
Explanation:
Genetic diversity may be defined as the number of total genetic characteristics of a species. Genetic diversity helps the population to adapt in the changing environment. Crossing over provides a source of genetic diversity.
Crossing over is the process of exchange of genetic material during the process of meiosis. Thus, crossing over increases the variation of genetic characteristic in the haploid gamete cells.
Thus, the correct answer is option (b).