Question

the ozone layer absorb harmful wavelength of light

Answer 1

Convection is the process of circular movement of gas or liquid to rise or fall due to hot or cooling conditions. When the gas or liquid substance is heated it rises and become cool by losing the heat and increased density allows it to spread horizontally and to fall. The cycle is repeated generating convection forces. In Earth the convection currents are operated through magma in mantle region and in air in the atmosphere. The convection cells at equator cause the warm and moist air to rise from equator and descend from equator in 20 - 30 degrees range. This could be responsible for distribution of biomes such as tropical rain forests and subtropical deserts where the convection cycle is operated at maximum. option c is correct.