I think the answer is b or f
AN EPIDEMIC is a disease that affects a large number of people within a community, population, or region. example coronavirus .
Because through natural selection, only the fittest survive. when the fittest come together and reproduce then the species continues and evolves with only the fittest and strongest genes.
Answer:
Biome- A group of ecosystems with similar climate, vegetation, and wildlife
Ecosystem- All living and nonliving things in an area
Organism- A complete living thing
Community- All living things in a particular area
Population- A group of organisms of the same species in an area
