Respiratory and Excretory Systems

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What are the tiny air sacs found in the lungs that are used for gas exchange?

When energy is produced what gas product is released?

The muscle under the lungs that controls inhaling and exhaling.

What is the passageway for both food and air?

Hair like structures that line the nasal cavity.

The opening where urine leaves the body.

A group of tissues that perform the same job.

This sticky substance moistens air and helps to trap dirt we breathe in.