Question

read the passage. then answer the question below. giant kelp is one of the largest species of seaweed. forests of giant kelp grow in the cold, clear water off california. kelp forests provide shelter for many organisms. garibaldi fish defend territories at the base of kelp stalks. purple sea urchins live on the rocks that cover the seafloor. california sea otters float on the surface, resting as they hold onto kelp fronds to stay in one place. in a california kelp forest, the garibaldi, the purple sea urchins, and the rocks make up which of the following? select all that apply. a population part of a community part of an ecosystem

Explanation:

• A population is a group of the same species. Since garibaldi, purple sea urchins, and rocks are not the same species, it's not a population.
• A community is all the living organisms in an area. Garibaldi and purple sea urchins are living (part of a community), but rocks are non - living. However, the option says "part of a community" (the living parts among them are part of a community).
• An ecosystem includes both living (biotic) and non - living (abiotic) components. Garibaldi (biotic), purple sea urchins (biotic), and rocks (abiotic) together are part of an ecosystem.

Answer:

B. part of a community, C. part of an ecosystem