How does organic material enter soil

Through the decay of tiny life forms (organic matter). For example, diatoms are microscopic single-celled algae. So their fossilized remains would be called Diatomaceous Earth. Basically, this is an organic nutrient-rich "soil" (& is used commercially as a fertilizer & as a natural pesticide- aka- Mother Nature's product w/ no harm to the environment, pets or to people).

  Through the decay of tiny life forms (organic matter).

What is the difference between cytokinesis in plant and animal cells? animal cells dived by a cleavage furrow. plant cells divide by a cell plate that eventually becomes the cell wall. cytoplasm and cell membranes are necessary for cytokinesis in both plant and animals.