The variety of organisms within an ecosystem is characteristic of which type of diversity?
a. genetic diversity
b. ecosystem diversity
c. species diversity
d. regional diversity
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c. Species diversity

Explanation:

Because is talking about of organisms, it means, living beings and they are classified like species. There are species of animals and plants

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above