Which one of the following statements is false? Question 3Select one: Major biotic factors of ecosystems are the air (atmosphere); water (hydrosphere), and land (lithosphere). The Earth has a fixed amount of chemicals. Chemicals cannot be lost and replaced they must be recycled. Chemicals in a biogeochemical cycle circulate through both the living and the non-living parts of an ecosystem. The oxygen cycle, the nitrogen cycle, the carbon cycle and the water cycle are important biogeochemical
Answer (1)
The false statement is the first option “Major biotic factors of ecosystems are the air (atmosphere); water (hydrosphere), and land (lithosphere)," because air, water, and land are abiotic, not biotic factors.First Option - "Major biotic factors of ecosystems are the air (atmosphere); water (hydrosphere), and land (lithosphere)."This is false because air, water, and land are abiotic factors, not biotic. Biotic factors are living things like plants, animals, bacteria.Second Option - "The Earth has a fixed amount of chemicals."True. The Earth’s total amount of chemical elements is essentially fixed.Third Option - "Chemicals cannot be lost and replaced they must be recycled."True. Chemicals cycle through ecosystems; they don’t disappear but get reused.Fourth Option - "Chemicals in a biogeochemical cycle circulate through both the living and the non-living parts of an ecosystem."True. That’s the definition of biogeochemical cycles.Fifth Option - "The oxygen cycle, the nitrogen cycle, the carbon cycle and the water cycle are important biogeochemical."True. These are classic examples of biogeochemical cycles.
