Some students are performing a hydrobiology project on a creek. They obtained the GPP value as 7 mg/l and the value as 3 mg/l. What could be the NPP for the creek water?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae