Which of the following are true regarding ${CO}_{2}$ ?

a. Excess of ${CO}_{2}$ acts as a pollutant
b. Plants take in ${CO}_{2}$ for photosynthesis
c. Deforestation leads to decrease in the amount of ${CO}_{2}$ in air
d. Less quantity of ${CO}_{2}$ causes rise in temperature

a and b

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a, b and d

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a, b and c

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b and c

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Solution

The correct option is A
a and b

Excess ${CO}_{2}$ content in atmosphere traps solar heat resulting in an increase in the average temperature of earth. This greenhouse gas hence acts as a pollutant which causes global warming.

Plants take in ${CO}_{2}$ for photosynthesis in the daytime to produce food.

Deforestation leads to increase in the amount of ${CO}_{2}$ in air.

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Which of the following are true regarding CO2? a. Excess of CO2 acts as a pollutant b. Plants take in CO2 for photosynthesis c. Deforestation leads to decrease in the amount of CO2 in air d. Less quantity of CO2 causes rise in temperature

Which of the following are true regarding ${CO}_{2}$ ?

a. Excess of ${CO}_{2}$ acts as a pollutant
b. Plants take in ${CO}_{2}$ for photosynthesis
c. Deforestation leads to decrease in the amount of ${CO}_{2}$ in air
d. Less quantity of ${CO}_{2}$ causes rise in temperature