Which of the following are pollutants?

i. soot

ii. cfcs

iii. fossil fuel emissions

iv. sewage

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

the dark variety, as they are not visible on the dark tree barks

explanation:

the answer would be knowledge about cars!