Question

Which of the following is classified as a physical factor in abiotic components of an ecosystem?

Options

• Bacteria and fungi

• Hydrogen, oxygen, and nitrogen

• Carbohydrates, proteins, and lipids

• Air, water, and sunlight

Answer 1

Physical factors are non-living components that include air, water, vapours, minerals, soil, and sunlight. These provide the basic conditions required for survival of living organisms. Hydrogen, oxygen, and nitrogen are chemical factors, while carbohydrates and proteins are organic substances, and bacteria and fungi are biotic factors.