What is the term for rock that has weathered to become soil?
a. topsoil
b. horizon
c. permeable layer
d. parent material

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry