An agriculturist plants legumes, which host the bacterium rhizobium in their root nodules for nitrogen fixation. how will these legumes enrich the soil? select the correct answer.

a. they will overcome the deficiency of nitrogen in the soil.

b. they will allow bacterial growth in the soil.

c. they will prevent root diseases caused by other bacteria.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste.