Answer:
Chlorophyll and sun light.
Explanation:
Photosynthesis:
It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.
Carbon dioxide + water + energy → glucose + oxygen
water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture by chloroplast.
Chemical equation:
6H₂O + 6CO₂ + energy → C₆H₁₂O₆ + 6O₂
The glucose is converted into pyruvate and produces ATP through cellular respiration and produces oxygen.
The animals dont get what they need so the oxygen does not get fed
The answer to this is C. Industry. It's the only man made factor.
