HELLPPP Which of the following is the MOST common source of indoor
air pollutants in less-developed
countries?

A. poorly ventilated cooking fires
B. carbon monoxide from vehicles
C. cleaning solvents
D. air-conditioning units

solar energy can be renewed, so it never runs out unlike nonrenewable energy such as coal, oil, and natural gas.

now that's beneficial xd

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.