If scientists are studying the birds, crabs, and grass, but not the water or rocks in a salt marsh, what level of organization would they be studying? A. Community

B. Organism

C. Ecosystem

D. Population

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !

Which greenhouse gas is emitted when burn fossil fuels for energy? a. nitrogen b. oxygen c. carbon dioxide d. helium

What is the main storage pool for phosphorus?