Which term describes two populations using the same resource?

• A. Resource population
• B. Competition
• C. Molecule
• D. Consumer population

Answer: (B)

When two populations rely on the same resource, they compete for it because resources are limited and both groups want to use them. This interaction is called competition, and it can happen between different species (interspecific) or within the same species (intraspecific). Competition can influence how large each population gets, how fast it grows, and where it can live. The other options don’t describe this interaction: a resource population isn’t a standard term for using a resource; a molecule is just a chemical unit; a consumer population refers to organisms that eat others, not the act of two populations sharing a resource.