cesariglesias132456
cesariglesias132456 cesariglesias132456
  • 15-06-2021
  • Biology
contestada

Which of the following processes is not primarily caused by humans?
A. air pollution
B. the greenhouse effect
C. thinning of the ozone layer
D. increased carbon dioxide levels
.

Respuesta :

duynguyen1308
duynguyen1308 duynguyen1308
  • 15-06-2021

Answer:

D

Explanation:

A,B,C all caused by human. But D is less

Answer Link
nnekaeke123
nnekaeke123 nnekaeke123
  • 15-06-2021

Answer:

D

Explanation:

from my own understanding,we are not the only ones on this planet there are other animals

Answer Link

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