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zubka84 [21]
4 years ago
5

The ionosphere is

Biology
2 answers:
IRISSAK [1]4 years ago
4 0

Answer:

the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50 to 600 miles above the earth's surface.

Explanation:

Gemiola [76]4 years ago
3 0

The first two your welcome

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Chemical energy is used to do work in cells because the bonds in molecules contain ____________ energy.
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<h3>What is potential energy?</h3>

Potential energy is the energy stored in the bonds (structural arrangement) of chemical compounds, such as atoms and molecules.

<h3>Characteristics of potential energy</h3>

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