Producers, which are the base of the food chain for ecosystems are essential and do not require oxygen to cycle energy and matter, as they create oxygen through photosynthesis. Plants are producers that use this process to capture light energy and use it to convert carbon dioxide and water into an organic substance known as glucose.
The answer is false. It can happen any time if the year
It’s B, having variation from sexual reproduction because the two parent mix genetic information so they have more of an advantage