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laila [671]
3 years ago
7

Which human activities cause sudden changes to Earth’s surface?

Geography
2 answers:
Dahasolnce [82]3 years ago
8 0
Your answer will be b and c because you're planting of crops will take a while to grow so it is not a sudden change to the Earth's surface and if you're building a tunnel through the mountain it won't affect the Earth's surface
MissTica3 years ago
6 0

The answer is C and D. I just took the test and b was wrong

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Therefore, the answer is viruses can replicate inside cells, while bacteria release toxins to destroy cells.

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