An ecosystem consists of:

The correct answer is Living organisms and physical factors.

Key Points

• An ecosystem consists of a community of organisms together with their physical environment consists of two components Biotic and Abiotic.
  • Abiotic consists of non-living organisms(air, water, soil, minerals, sunlight.
  • Biotic consists of living organisms (Producers, Consumers, Decomposers).

Additional Information

• The Food Chain is a linear sequence of organisms where nutrients and energy are transferred from one organism to another.
  • Producers make their own food. Example- Green plants.
  • Primary Consumers depend on the producers. Example- Grasshooper
  • Secondary consumers depend on the primary consumer for energy. Example- Frog
  • Tertiary consumer depends on the secondary consumers for the food. Example- Snake
  • Decomposers are microorganisms that decompose the dead and decaying material into humus which enriches the soil. Example- Bacteria, Fungus.