<span>The chromosomes of two diploid cells split apart at the centromere</span>
Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.
The answer is; C
Ozone is a layer in the stratosphere that absorbs UV light from the sun and protects life on earth. UV can cause damage to the genetic material of cells. The other is greenhouse gases that trap infrared heat within the lower atmosphere and cause global warming of the planet.
