General science · Difficulty 3
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which situation is the best example of ecosystem?
- A leaf uses sunlight, water, and carbon dioxide to produce sugar.
- Plants, animals, soil, and water interact in a wetland.
- After vaccination, certain proteins help recognize a pathogen.
- A metal spoon warms while resting in hot soup.
Reveal answer and explanation
Plants, animals, soil, and water interact in a wetland.
ecosystem is a community of organisms interacting with their physical environment. Plants, animals, soil, and water interact in a wetland.