Read the passage. Then answer the question below.

Question

a tide pool on the Oregon coast
Tide pools on the Oregon coast can experience large waves and strong currents. Many tide pool organisms attach securely to the surrounding rocks to avoid being swept away.
Ochre sea stars make a sticky substance to help them hold onto the rocks. Pacific blue mussels glue themselves to the rocks using structures called byssal threads. A black leather chiton sticks to a rock by creating suction with its strong muscular foot. Black oystercatcher birds eat mussels and chitons. These birds are strong enough to pry animals off of the rocks.
In a tide pool on the Oregon coast, the Pacific blue mussels, the black leather chitons, and the black oystercatchers make up which of the following? Select all that apply.

Answer 1

In a tide pool on the Oregon coast, the Pacific blue mussels, the black leather chitons, and the black oystercatchers make up the following:

1. A biological community - This includes all the different species living together in the tide pool, like the mussels, chitons, and birds.
2. A food web - This describes the feeding relationships among the organisms, where black oystercatchers prey on mussels and chitons.

Both options are applicable.