Question

read the passage. then answer the question below.

image: a tasselled wobbegong shark on a coral reef
coral reefs in indonesia have more than 1,500 species of fish. that’s more fish species than anywhere else on the planet! these fish range from tiny pygmy seahorses to huge queensland groupers. pygmy seahorses live on a type of pink, bumpy coral that looks just like the seahorses’ skin. the coral provides the perfect camouflage.

some fish species, such as bigeye trevally, swim in schools. other species, such as the tasselled wobbegong shark, hunt alone.

on a coral reef in indonesia, a school of bigeye trevally make up which of the following? select all that apply.

• a population
• part of a community
• part of an ecosystem

Explanation:

1. For "a population": A population is a group of individuals of the same species living in a particular area. A school of bigeye trevally is a group of the same species (bigeye trevally) in the coral reef (a particular area), so it is a population.
2. For "part of a community": A community consists of all the different populations (species) living and interacting in a particular area. The bigeye trevally population is part of the larger community of species (including other fish, corals, etc.) in the coral reef.
3. For "part of an ecosystem": An ecosystem includes all the living (biotic) components (like the community) and the non - living (abiotic) components (like water, rocks in the reef) in a particular area. The bigeye trevally, as part of the biotic community, is also part of the coral reef ecosystem which has abiotic factors too.

Answer:

a population, part of a community, part of an ecosystem