A. minerals
B. energy
C. food
D. All of the above
Related Mcqs:
- Every ecosystem must have a continuous external source of:
- The source of energy in an ecosystem is __________?
- The pyramid of energy in any ecosystem is __________?
- The two major functional components of an ecosystem are:
- The main energy source for the environment is ___________?
- The primary source of energy for the earth’s atmosphere is __________?
- Total amount of living material at the various trophic levels of a food chain is depicted by pyramids of __________?
- __________ energy is the main driving force of the ecological system.
- The amount of energy expended by the action of external force in deforming an elastic body is known as
- In grazer food chain the living plants are directly __________?
