yuliannarevilla72 yuliannarevilla72
  • 22-01-2022
  • Biology
contestada

HELP.
humans have been burning fossil fuels rapidly for the past 250 years. As a result, the amount of atmospheric CO2 has increased by about ___% since the year 1800.


A) 20


B) 40


C) 60


D) 80

Respuesta :

y7ni2u5rr9
y7ni2u5rr9 y7ni2u5rr9
  • 22-01-2022

Answer: it’s B) 40

Explanation : I took the test.

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