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Human activity has had ________ on the natural balance of Earth’s ecosystems. A a positive effect B a negative effect C no effect D an unclear effect

Human activity has had ________ on the natural balance of Earth’s ecosystems. A a positive effect B a negative effect C no effect D an unclear effect
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3 votes
Human activity has had ________ on the natural balance of Earth’s ecosystems.

A
a positive effect
B
a negative effect
C
no effect
D
an unclear effect

asked
User Igorio
by
8.7k points

1 Answer

5 votes
Human activity has had a negative effect on Earth’s ecosystems, unfortunately.
answered
User Hiery Nomus
by
8.2k points
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