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# Gigatons

APES-VFTILX

In order to keep our average temperature from topping 2 degrees celsius higher than normal, we can only release 565 Gigatons of ${ CO }_{ 2 }$. We currently release about $3.1 \times { 10 }^{ 10 }$ tons a year.

How many years from now will we reach the 565 maximum, if we do not change our rate of release?

A

26

B

18

C

175

D

1.5

E

38