LIFE SCIENCE

Detailed explanation-1: -Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms. Abiotic factors include rocks, temperature, and humidity. Every factor in an ecosystem depends on every other factor, either directly or indirectly.

Detailed explanation-2: -The living parts of an ecosystem include animals (consumers), plants (producers), and fungi and micro-organisms (decomposers). The nonliving, or abiotic components of an ecosystem include the sun’s energy, water, air (atmospheric gases), and rock, which makes up the landforms.

Detailed explanation-3: -Biotic components include plants, animals, decomposers. Nonliving components include air, water, land. A food chain is a chain in an ecosystem where there is transfer of food and energy from one organism to another in a sequence. Thus, the correct answer is ‘Food chain and decomposers.

Detailed explanation-4: -Biotic factors include animals, plants, fungi, bacteria, and protists.