Question

question 20
match reactants and products in photosynthesis.
column a

1. glucose
2. water
3. oxygen
4. carbon dioxide

column b
a. reactant
b. product
question 21
which two processes both increase the amount of carbon dioxide in the atmosphere?
a photosynthesis and cellular respiration
b burning of fossil fuels and photosystem ii and i
c spontaneous human combustion and photosynthesis
d volcanic eruptions and cellular respiration
question 22
please match the key word to the correct definition.

Explanation:

Step1: Recall photosynthesis equation

The equation for photosynthesis is $6CO_2 + 6H_2O+ light\ energy
ightarrow C_6H_{12}O_6+6O_2$. Carbon - dioxide and water are reactants, and glucose and oxygen are products.

Answer:

Question 20:

1. b. product
2. a. reactant
3. b. product
4. a. reactant

Question 21:
d. volcanic eruptions and cellular respiration