Question

Consider the model of the oxygen cycle as it moves through the various spheres of Earth. One assumption we can make after analyzing the model is that

A) the majority on the oxygen on Earth is stored in the lithosphere and is the result of weathering.
B) photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.
C) oxygen is added from the atmosphere when plants undergo photosynthesis and is removed from the atmosphere by animal respiration.
D) the inputs and outputs of the oxygen cycle are equal and opposite to the inputs and outputs of carbon dioxide in the carbon cycle

Answer 1

B

Step-by-step explanation:

it's the only answer that fully answers this question. and i took the test

Answer 2

B)Photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.

Step-by-step explanation:

Only option B satisfies the answer to the question.

We know that photosynthesis is the process whereby green plants manufacture their foods in the presence of carbon dioxide and sunlight. Carbondioxie in the environment is used to manufacture food in plants. The bye product of photosynthesis is oxygen gas. Oxygen gas is used for aerobic respiration in animals and is essential for their life. This way photosynthesis adds to the pool of oxygen in the atmosphere and aerobic respiration removes from the pool.