Which gas is exhaled along with used air?

SCIENCE QUESTION... ☺️​

Explanation:

When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide.

C.1%, Only 10% of the energy will be transferred to the next consumer, in this case 10% of the energy from the producer will be transferred to the primary consumer and 10% from the primary consumer will be transferred to the secondary consumer. That makes it 1% from the energy in the primary producers will be transferred to the secondary consumer.