A student thinks that populations higher in a food chain
are larger because they deplete the populations of
organisms lower in the chain. Using evidence from this
lesson, explain why this student's thinking is incorrect.
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Ответ:
28
Explanation:
(30+29+25+20+X)/5=25
30+29+25+20+X=125
104+X=125
X=21
The fifth number is 21.
The 3 largest numbers are 30, 29 and 25.
Their average is 28.