Which trophic level has the greatest total amount of energy to transfer to the next level?
a. grain
b. mouse
c. snake
d. hawk

Structures in cells that carry out specific functions.

Amutagen is 1: a living thing that has undergone a mutation. 2: an agent that causes a mutation in dna. 3: a mutation that has affected one gene. 4: a chemical that can poison living cells.

What does the positioning of transcription factors determine?