Respuesta :
Answer:
A) produce O2
Explanation:
This is the exchange cycle between the plants and animals. Animals give off carbon dioxide (CO2) as an excess waste while the plants give off oxygen (O2).
Answer:
A) produce O2
Explanation:
This is the exchange cycle between the plants and animals. Animals give off carbon dioxide (CO2) as an excess waste while the plants give off oxygen (O2).