Question

The balance of $C{O_2}$ and ${O_2}$ in the atmosphere is maintained by
A. Photosynthesis and respiration.
B. Photolysis
C. ${C_4}$ plants
D. Photorespiration

Answer 1

An atmosphere is a layer or series of layers of gases that surround a planet or other material body and are kept in place by gravity. If the gravity on which an atmosphere is subjected is high and the temperature of the atmosphere is low, the atmosphere is more likely to be kept. Nitrogen (approximately 78 percent), oxygen (about 21 percent), argon (about 0.9 percent), carbon dioxide (0.04%), and other gases in tiny amounts make up the Earth's atmosphere.

Complete answer:
Photosynthesis is an important energy conversion process in which plants utilise photons in the light to create molecular oxygen and carbohydrates. The sun, a natural source of light, aids green-colored plants in converting atmospheric carbon dioxide to usable molecular oxygen, which humans breathe. They assist to keep the atmosphere's oxygen and carbon dioxide levels in check. Photosynthesis is responsible for almost all of the oxygen in the atmosphere, which also indicates that respiration and photosynthesis are linked. When animals and people consume plant materials, the chemical energy held in plants is transmitted to them. When convection becomes a more efficient heat transporter than thermal radiation, the atmosphere circulates owing to temperature differences. Excess heat in the tropics is transferred to higher latitudes on planets where solar radiation is the major heat source. When a planet generates a large quantity of heat internally, like Jupiter does, convection in the atmosphere may carry thermal energy from the planet's higher temperature interior to the surface.

Hence option (A) is correct.

Note:
The atmosphere acts to form a planetary surface from the perspective of a planetary geologist. Dust and other particles are picked up by the wind and crash with the ground, eroding the relief and leaving deposits (eolian processes). Frost and precipitation, both of which are influenced by atmospheric composition, have an impact on the relief. Climate change has the potential to alter the geological history of a planet. Studying the Earth's surface, on the other hand, leads to a better knowledge of other worlds' atmospheres and climates.