General science · Difficulty 1
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 statement best describes ecosystem?
- a protein made by the immune system that recognizes a specific target
- transfer of thermal energy through direct particle contact
- the process plants use to convert light energy into chemical energy
- a community of organisms interacting with their physical environment
Reveal answer and explanation
a community of organisms interacting with their physical environment
ecosystem is a community of organisms interacting with their physical environment. Plants, animals, soil, and water interact in a wetland.