20. Which of the given statement below does not show proper care of the
ear specimen.
biological organization from cell to biosphere?
A. Throwing the garbage without proper segregation.
B. Restoration of damaged ecosystems by planting trees.
C: Eat more variety of vegetables and fruits as a source of vitamins and
D. Encourage people to live by not disturbing the balance between biotic and
abiotic factors in the environment.
21. What ecological relationship is being exhibited by the exchange of gases
between man and plants?
A. Commensalism
C. Mutualism
B. Parasitism
D. Predation
22. Why decomposers is important?
A. It releases nitrogen
B. Trapping of solar energy
C. It produces a substance essential to living organisms
D. It converts decaying matter into essential substances needed by living
organisms.​