Some bacteria are and require oxygen while others do not and are

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

What goes in and out of a cell respiration?

How do the sperm cells get from the stigma to the ovules?