7. According to the fossil record, which group of organisms has existed for the greatest length of time? (1) gastropods (3) mammals

(2) corals (4) vascular plants

A trait has two alleles, and their frequencies are represented by p and q. If p = 0.68, what is q

Explain the effect of the mutation that occurs among northern european on lct gene expression

Water is a term used to describe that is safe to drink

What method would you use to divide organisms into groups, or classes, based on specific characteristics?

Which of the following statements is true about the cycling of oxygen in a pond ecosystem?

Disorder affecting one or more nerves where they exit the spine

What senses is associated with the temporal lobe?

What are 2 ways nitrogen becomes usable to plants, humans and animals?

What factor has the greatest effect on species diversity

A scientist inserts a radioactively labeled DNA molecule into a bacterium. The bacterium replicates this DNA molecule and distributes one daughter molecule (double helix) to each of two daughter cells.