How do most animals produce carbon dioxide? O A. By buming fossil fuels
O B. By photosynthesis
O C. By cellular respiration
O D. By eating plants

Cellular Respiration

Explanation:

APEX

the four parts a circuit has is the energy source that provides the energy that makes the circuit move around, the second parts is the conductor witch connects the energy source and the load, the load is a device that turn on like a light bulb and lastly a switch that turn on and of the circuit