Carbon is present in the atmosphere as

$a$. carbon dioxide

$b.$carbonate ion

$c.$carbon dust

$d.$carbon monoxide

Carbon is the second most prevalent element in living life. Carbon is found in all organic compounds, and its involvement in the formation of macromolecules is critical to all living things.

A carbonate ion is a carbonic acid salt that isn't found in the atmosphere.

Carbon dust is a type of carbon that is used to create drawings and images but is not prevalent in the atmosphere.

Carbon monoxide is a tasteless, odorless, and colorless gas. This isn't the form of carbon that exists in the atmosphere. us.

Hence. the incorrect answer is$b,c,d$

Carbon dioxide is the most common type of carbon in the atmosphere. It is an odorless and colorless gas that is necessary for life on Earth to survive. Plants absorb carbon dioxide and release oxygen, which animals inhale. This gas exists as a trace gas in the Earth's atmosphere, with a concentration of roughly $0.04$percent by volume.