Which option describes a carbon footprint?(1 point)
Responses
a. the amount of carbon dioxide emitted into the atmosphere over a period of time
b. how human lifestyles affect the sustainability of the planet over time
c. a long-term shift in climate patterns typically trending toward decreasing temperatures
d. the amount of carbon a rainforest takes in over a period of time
1 answer
a. the amount of carbon dioxide emitted into the atmosphere over a period of time