Question

Most organisms breathe using oxygen or carbon dioxide. Where do these gases come from on land?

air
offspring
homeostasis
shelter

Answer 1

the answer is A

Step-by-step explanation:

Earth's atmosphere contains oxygen which humans breathe then creating the breathing cycle maintaining homeostasis.

Answer 2

Air.

Step-by-step explanation:

Earth's atmosphere contains oxygen which humans breathe then creating the breathing cycle maintaining homeostasis. Homeostasis would be mistaken and is a trick answer.