Cells occur at a range of sizes, but the components of which they are composed (biological macromolecules and other materials) do not change sizes; rather the individual molecules will be of comparable sizes whether they occur in a tiny bacterial cell or a large eukaryotic cell. explain how this observation establishes a lower limit for how small living things, as we recognized them, can be.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

the form of energy changes and the total energy increases0l

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explanation:

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regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.