Potential energy due to an object's compression or extension
is called?

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

What enzyme is most important for dna replication and why?

Which feature of a human community is similar to a niche in a biological community