An embryo is surrounded with fluid and it cannot breathe. why doesn't it suffocate

the answer is d.) homologous; have mammary glands

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.

answerbacterium;