Aplant with the genotype tt is called

Which direction does the energy flow in this energy pyramid ?

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"