What are the reactants of photosynthesis? carbon dioide and hydrogen;
hydrogen oxygen and water
;light energy, water and carbon dioxide; oxygen and glucose

The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.

Explanation:

It takes six atoms of carbon (C), six atoms of oxygen (O) and twelve atoms of hydrogen (H) to make one molecule of glucose (C6H12O6)

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

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the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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