<span>The only way to test a particular variable for sure is to leave all other variables constant, and if a change in ONE variable creates an overall change, then you know that that variable caused it. But if you change 2 variables, and something changes, you don't know which one changed it for sure. </span>
When the starfish were removed from the area as part of an experiment, the mussel population swelled and crowded out other species. The biodiversity of the ecosystem was drastically reduced. Payne's study showed that identifying and protecting keystone species can help preserve the population of many other species.
Answer:
This phenomenon is known as <u>Exaptation</u>.
Explanation:
This phenomenon occurs in both anatomy and behavior and serves to provide an advantage to the organism or specie that undergoes exaptation. It is a process that can be considered as an opposite to adaptation.
Hope that answers the question, have a great day!
Hello.
The answer is: A.Ultraviolet rays from the Sun converted dissolved carbon dioxide to oxygen.
the more carbon dioxide that people pumped into the atmosphere by burning fossil fuels, the more the oceans would absorb. The ocean would continue to soak up more and more carbon dioxide until global warming heated the ocean enough to slow down ocean circulation.
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Your answer is most likely C
