Answer:
A. Producer
Explanation:
The primary source of energy for almost every ecosystem on Earth is the sun. Primary producers use energy from the sun to produce their own food
oxygen reacting with the mineral in roco

The branch of biology that is related to study of animals, their structures, evolution, and other factors is known as <u>Zoology</u> ~
The correct answer would be A. yes, but it is only produced at night when plants can no longer carry on photosynthesis.
Explanation:
This is because when the sun rises Photosynthesis starts which carbon dioxide is taken in and oxygen is given out.