1.where would you expect to find the most phytoplankton? why?
2.what do deep benthic organisms in a marine ecosystems have to deal with?
3. what is the relationship between depth and light penetration?

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.