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Softa [21]
3 years ago
8

12. About 85% of the world's______

Biology
1 answer:
Deffense [45]3 years ago
8 0

Answer:

im pretty sure its d

Explanation:

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Which phrases describe radioactive elements? Check all that apply.
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A radioactive element is an element which is subject to spontaneous degeneration of its nucleus followed by the emission of alpha, beta and gamma particles. All elements with atomic numbers greater than 83 are radioactive.

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Explanation for other options:

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The sodium-potassium ion exchange pump_____________.
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faltersainse [42]
D Because supports large numbers of plants and species and variety of crops
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