Answer:
23rd Pair
Explanation:
Took bio last year, I know it's right, hope it helped
They show evidence of other life beyond us, when we see fossils they give is info that can determine other scientific data that is important for human life
Your ugly, no offense your weird no offense
The continual input of energy, mostly from sunlight, sustains the process of life. Sunlight allows plants, algae and cyanobacteria to use photosynthesis to convert carbon dioxide and water into organic compounds like carbohydrates. This process is the fundamental source of organic material in the biosphere. There are a few exceptions to this, such as ecosystems living around hydrothermal vents on the ocean floor, which derive their energy from the chemical compounds such as methane and hydrogen sulfide. In either case, the overall productivity of an ecosystem is controlled by the total energy available.