Why does every one have cells

1 answer:

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<span>Everyone has cells because these are the building blocks of life. These tiny particles that clump into groups that form tissues, organs, and organ systems are what makes organisms distinct from non-living things that exist on Earth. Where there are cells, life is present, and in its absence life cannot exist as we know of today. Cells are responsible for bringing different species of organisms that are found in different ecosystems all over Earth. They are tiny but in groups they are responsible for every living organisms that have existed through time. </span>

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Which of the following statements about energy is TRUE? Question 17 options: It can be used over and over again. It tends to be

Law Incorporation [45]

<h2>Energy </h2>

Explanation:

Energy flows in only one direction through an ecosystem

The Sun supports most of Earth's ecosystems
Plants create chemical energy from abiotic factors that include solar energy and chemosynthesizing bacteria create usable chemical energy from unusable chemical energy
The food energy created by producers is passed to consumers, scavengers, and decomposers
Energy flows through an ecosystem in only one direction, it is passed from organisms at one trophic level or energy level to organisms in the next trophic level
Most of the energy at a trophic level – about 90% – is used at that trophic level and organisms need it for growth, locomotion, heating themselves, and reproduction
So animals at the second trophic level have only about 10% as much energy available to them as do organisms at the first trophic level
Animals at the third level have only 10% as much available to them as those at the second level