Which hormone does the adrenal gland secrete and what is it called

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

What will happen if two of the base pairs of the stand of the dna are switched