Hello,
The answer is for sure <span>A. O horizon</span>.Positive.
Hope this helps
Answer:
Explanation:
TL;DR (Too Long; Didn't Read) The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.
Methanogens can be found in B.human intestines
Roots of plants and synthetic fertilizers can contain oxygen or come into contact with oxygen.
