how many units of energy would there need to be in the first trophic level to end up with 1000 units of energy in the second? in the third? in the fourth?

Which is required for sexual fissiondiploid cell productionmeiosis

Anurse is in the dining room and overhears a new nurse tell a client with body dysmorphic disorder that she's much too thin and must eat more before she can go home. the client bursts into tears and runs out of the dining room. what is the best way for the nurse to address this situation?

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?