Answer:
C. Air Pollution because light is needed to do photosynthesis as well as carbon dioxide. Temperature is also affecting the rate of photosynthesis (temperature too high the enzymes are denatured) so the answer would be C.
You can pick any organism and relate most of the cell theory to them. For instance, all living organisms are composed of cells. This is part of the cell theory and all living organisms are just that, made of cells. Another part of the cell theory that can be applied to any organism is that hereditary information is passed on from cell to cell. When we have Offspring, we pass off our hereditary information to our offspring. Lastly, part of the cell theory states that cells arise from pre-existing cells. I was born from a mother and a father so as a human I exist because I came from another human.
The answer is 'Cambrian' explosion. This took place approximately 541 million years ago. 'Explosion' refers to the evolution of a large range of new major animal phyla. Scientists know this by the large number of diverse fossils from this period. Prior to this period, organisms were single-celled, but over the Cambrian Explosion, lasting about 80 million years, life forms diversified rapidly to resemble the life forms existing today.
