Hydrogen has one valence electron. To make it an ion, you need to remove this valence electron. When you remove an electron, the element becomes positive because you are taking away the negative
<em>For example,</em>
<em> consider a mountain whose summit is 5,000 feet (1,500 m) in elevation, but somewhere on the way up, the trail goes back down 250 feet (76 m). ... </em>
<em>If one hikes over five hills of 100 vertical feet each, the cumulative elevation gain is 5 × (100 feet (30 m)) = 500 feet (150 m).</em>
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The answer is c ) cellular respiration uses oxygen and releases carbon dioxide while photosynthesis uses carbon dioxide and releases oxygen
I would say C or D
Hope This Helps
Answer: I believe it is Thigmotropism.
