A student is observing a sample of pond water and provides the following description in her observations.“I see euglena and paramecium swimming around in the drop of water. A daphnia is feeding on a clump of algae. I see air bubbles around the small clump of algae.”Would you describe what the student saw as a community or an ecosystem? Explain what clue(s) helped you decide.

The student is viewing a community.

Explanation:

As we can see in the question above, the student is visualizing a group of living beings of different species that share the same environment and that interact with each other. We call this type of situation a Community.

An ecosystem, on the other hand, would be the set of several communities, which is not presented in the question above.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers

i would think a oil tanker that has leaked in a bay