Why green plants or ales are good indicators of the distribution of living organisms in an area?

Green plants and algae are Excellent indicators of the distribution of living organisms because they are primary producers, forming the base of the food chain in ecosystems. Their presence and diversity can reflect the availability of resources such as light, water, and nutrients, which in turn influence the types of animals and other organisms that can thrive in the area. Additionally, specific plant species often have particular habitat requirements, allowing scientists to infer the overall health and biodiversity of the ecosystem based on plant distribution.