C)Fossil Aging, I think...
....Hope it helps, have a good rest of the day:)
The correct answer for this question would be the WHITE RHINOCEROS. The white rhinoceros weighs 5, 100 pounds or 2, 300 kilograms. In the list, the first mammal that is considered as the heaviest is the African elephant which weighs 24, 000 pounds or 11, 000 kilograms and followed by Asian elephant weighing 12, 100 pounds or 5, 500 kilograms. Hope this answer helps.
The Earth's atmosphere would have little or no oxygen. A by-product of photosynthesis is oxygen. Photosynthesis is the process by which green plants use energy from the sun to make their own food in the leaves. The process uses sun light, water and carbon dioxide to yield oxygen and simple sugars. The simple sugars are stored in form of starch for future use by the plants, while oxygen is either used for cellular respiration or released to the atmosphere. The process of photosynthesis adds oxygen to the atmosphere and uses carbon dioxide from the atmosphere.