They make a food web making us at the top survive with food.
Producers (incorporate it into organic) and bacteria play a major role in the nitrogen cycle.
humans play role of species by moving around and getting other organisms around to their species
bacteria and fungi
you your mom and your dad
Plants, algae, and some bacteria are examples of organisms that play the role of producers in an ecosystem. They are able to convert sunlight into energy through photosynthesis, which forms the basis of the food chain by providing energy for other organisms.
Saprotrophs are organisms that get their energy from non-living organic material. The important role they play is they get rid of decaying matter.
Viruses play a role in nature by helping regulate population sizes of host organisms, transferring genetic material between organisms, and influencing ecosystem dynamics through their interactions with other organisms.
The role the sun plays is that it gives energy to different living organisms.
shelter for organisms and saltation preventions
eosinophils
Natural selection is the changing of organisms gradually over time. Natural selection and evolution are parts of environmental science due to them being the studies of organisms.
Evolution is the effect caused by the interaction of organisms and their environment, organisms and other organisms, organisms and their genes, and so on. The simplest answer to this question is that organisms produce and propagate replications of the alleles they carry: they reproduce.