2 Points SHORT ANSWER
Question 18
Despite high levels of radioactive contamination, ecologists have
discovered that the ecosystem within the Chernobyl exclusion
zone is thriving.
Explain how the ecosystem has rebounded so strongly, and how
this evidence can be applied to other environmental issues.
Answer in two to four sentences.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

gag reflex, poor dentition, gum retraction

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a compound light microscope is used to magnify objects in steps.  

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