Biology, 02.07.2019 22:30 babygirl62716
On several occasions in earths history, huge numbers of volcanoes have erupted. these eruptions have sent particles into the air that blocked sunlight to plants, possibly causing the extinction of some species. which “spheres” interacted in these situations a. exosphere; biosphere; geosphere b. geosphere; biosphere; cryosphere c. biosphere; geosphere; atmosphere d. exosphere; geosphere; atmosphere
Answers: 1
Biology, 21.06.2019 19:30
Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.
Answers: 1
Biology, 22.06.2019 19:00
1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?
Answers: 2
Biology, 22.06.2019 19:00
What is the next step in muscle contraction after the actin changes shape
Answers: 2
On several occasions in earths history, huge numbers of volcanoes have erupted. these eruptions have...
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