Answer:
the main function of Krebs cycle is that it plays a big role in the process of energy production and biosynthesis.
<span>The answer is If ducks bark then cats fly. T</span>he converse of the statement If cat fly then ducks bark is If ducks bark then cats fly. <span>The converse of A implies B is B implies A.</span>
The answer is option B "temperature." Greenhouse effect is the process of trapping the suns heat in the lower atmosphere. A increase of greenhouse effect would cause surface temperatures to rise. Which then contributes to global warming because of melting the ice bergs in cooler areas on Earth and causing waters to rise and creating storms. It's not option A because the sun gives off heat or harmful radiant waves which doesn't increase carbon dioxide levels. Wouldn't be option D because it would contribute but it wouldn't happen without a increase of temperature. It also wouldn't be option C because oxygen isn't relevant in this case.
Hope this helps.
Answer:
4 mass extinctions
Explanation:
as there are huge drops in the graphs
at 440,390,260,50
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