Scientific discoveries have led to:

A. the growth of bacteria and plants.
B. the invention of cars and TV.
C. the development of the human skeleton.
D. the formation of planet Earth.

Scientific discoveries have led to the invention of cars and TV

Explanation:

Scientists over the years has birthed different inventions which has made life easier for man-kind, inventions such as cars, TV which has greatly enhanced human mobility as well as connection to the other part of the world within a short period of time.

C.

Explanation:

Trees help maintain air quality by removing particles from the air. Trees remove a significant amount of carbon dioxide from the air. They also remove ozone and particulates that accumulate in the air. In addition to removing these particles, trees release oxygen back into the air. By removing carbon dioxide and returning oxygen, trees help maintain the balance between these gases in the atmosphere, replenishing the oxygen removed by organisms and removing the carbon dioxide released by organisms.