<span>A zygote begins as a one-cell structure that is created when a sperm and egg merge.
In the embryonic development of people and different creatures, the zygote arrange is brief and is trailed by cleavage, when the single cell moves toward becoming subdivided into smaller cells. we can also define zygote as a cell that is formed when two gametes meet.
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The correct answer is option B, that is, all living organisms are composed of one or more cells, which came from pre-existing cells.
A scientific theory refers to a well-substantiated illustration of some characteristic of the natural world, on the basis of a number of facts, which have been repeatedly confirmed via the experiment and observation. Such fact-supported theories are not hypotheses, however, are reliable explanations of the real world.
During the late 1830s, the zoologist Schwann and the botanist Schleiden were examining tissues and postulated the unified cell theory. According to the unified cell theory, all the living things comprises of one or more cells, the cell is the fundamental unit of life, and the new cells originate from the pre-existing cells.
The correct answer is:
d.
all of the above
Explanation:
In plate tectonics, a convergent boundary, also recognized as a destructive plate boundary, is a section of active deformation where two or more tectonic plates or parts of the lithosphere are near the edge of their life cycle. If two tectonic plates strike, they create a convergent plate boundary.
Small intestines. <span>Although some </span>digestion<span> begins in the stomach, </span>most digestion<span> and absorption </span>take place<span> in the small intestine. The purpose of the small intestine is to finish </span>digestion<span> and absorb nutrient.</span>
