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27 September, 23:42

Which statement about environmental changes is true?

A. they affect food chains but not food webs

B. They may affect several populations in an ecosystem

C. They cannot be caused by human activity

D. They have no effect on living organisms in an ecosystem

+1
Answers (2)
  1. 28 September, 00:00
    0
    I thought, it is C. yea
  2. 28 September, 00:10
    0
    I'd say C cause that seems like the reasonable answer
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