1. Which of the following describes abiotic component?
A. It has a living and non-living organism.
B. It is a living organism in an ecosystem. C. It is a non-living thing in an ecosystem. D. It is an organism that lives in an ecosystem.
2. The following are examples of abiotic components of an ecosystem EXCEPT
A. bird
C. sunlight
B. rock
D. water
3. Why is water said to be universal solvent?
A. It dissolves some substances.
B. It dissolves almost all substances.
C. It is dissolved by some substances.
D. It is dissolved by almost all substances.
4. How important is oxygen to the living things?
A. It is important since we can live without it.
B. It is important since it is used in the process of photosynthesis.
C. It is important since we cannot produce carbon dioxide without it.
D. It is important since it is used by our cells in the process of respiration. 5. Which is the main source of energy on Earth?
A. Moonlight
C. Sunlight
B. Radiation
D. Ultraviolet rays​