179k views
4 votes
9. When humans burn fossil fuels it is called _______________ and contributes to global warming

by releasing excess carbon dioxide into the atmosphere.
a. erosion
b. photosynthesis
c. respiration
d. combustion

User Magcus
by
5.1k points

2 Answers

7 votes

Answer:

C: respiration

Step-by-step explanation:

User Riceball LEE
by
5.5k points
5 votes

Answer:

d. combustion

Step-by-step explanation:

User Featherbelly
by
4.5k points