Which of the following accurately pairs the cell part with its function?
a. nucleus—produces energy
b. cytoskeleton—moves cells and cell parts
c. smooth er—assembles proteins
d. lysosomes—control the cell's activities

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

Microorganisms aren’t all decomposers; in fact, many act as producers or primary consumers in an ecosystem. how do microorganisms that act as producers benefit the rest of an ecosystem in terms of energy transfer? what about microorganisms that act as primary consumers?

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures