The cell structure responsible for maintaining the environment of the cytoplasm is the A. cell wall.
B. cell membrane.
C. chloroplast.
D. mitochondria.
E. Golgi body.

In what part of the body does the most muscle activity happen?

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48

Some scientists argue that global warming is related to buming fossil fuels to produce energy o increased use of fertilizers loss of forested areas a of the above