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... some 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 consists of multiple individuals of the same species (bigeye trevally) in the Indonesian coral reef area, so it qualifies as a population.
2. For "part of a community": A community is all the different populations of species that interact in a particular area. The bigeye trevally population is one of the many species (like seahorses, groupers, sharks, etc.) in the coral reef community, so it is part of the community.
3. For "part of an ecosystem": An ecosystem includes all the living (biotic) components (like the bigeye trevally, other fish, coral) and the non - living (abiotic) components (like water, temperature, salinity of the reef environment) in a particular area. The bigeye trevally, along with other organisms and the reef environment, make up the coral reef ecosystem, so it is part of an ecosystem.

Answer:

a. a population
b. part of a community
c. part of an ecosystem