Most organisms in a food web

Orange roughy fish are a fourth-level consumer. We may see fifth - or sixth-level consumers, but not as many as at lower levels on a trophic pyramid. Why are the upper levels of a tropic pyramid limited?

A paramecium is a single-celled, freshwater protist that lacks a cell wall but contains a contractile vacuole.

After a subtotal gastrectomy, a client has a nasogastric (ng) tube to continuous low suction. three hours after the surgery, the client complains of nausea and abdominal pain. the client's abdomen appears distended. the nurse should first:

Which of these events occurs first during the process of transcription? A. RNA polymerase joins nucleotides into the RNA molecule. B. RNA polymerase binds to the promoter. C. Introns are removed from the RNA molecule. D.

Dna is found in the ___ of the eukaryotic cell

What is ATP, and when is energy released from it

Why do scientists classify fish, amphibians, reptiles, birds, and mammals together in one group?

In what part of cell does replication occur

What factors influence the impact a population has on its environment?

What kind of bonds form between the oxygen atoms of one water molecule and the hydrogen atoms of another water molecule