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KIM [24]
3 years ago
10

Which are accurate statements about dark matter? Select two correct answers

Biology
1 answer:
Olegator [25]3 years ago
5 0

Answer:

Scientists throughly understand what dark matter is and what it does

New data could cause scientist to change their hypotheses about dark matter

Explanation:

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Periods of time when evolution took place quickly followed by long periods of stability
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The theory of punctuated equilibrium states that evolutionary change is characterised by short periods of rapid evolution followed by longer periods of stasis in which no change occurs. ... To meet this challenge, evolutionary biologists attempt to describe how and why evolutionary changes accumulate over time

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the total mass of all the organisms in a representative area of the ecosystem C. the total mass of all the organisms in the ecosystem D. the number of organisms in each trophic level of the food web. leticiasilvacos is waiting for your help.

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Difference of positive and negative feedback
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The difference is:

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