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3 Cards in this Set
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12.Why have most plants and algae on Earth evolved to be green? |
Green photons from sunlight have low energy and numbers, so they evolved to use less of them and reflect them |
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13.What color would plants on other planets w/ cooler stars (red dwarfs) likely be? explain |
black because they are absorbing whatever photons they can |
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14. Explain what an oxidation-reduction (i.e., redox) reaction is. What does it mean tobe chemically reduced? |
An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. To be chemical reduction: a reaction that involves the gaining of electrons |
