Answer: Harmful UV radiation.
- A Visible light
- B Harmful UV radiation
- C Radio waves
- D Infrared radiation
Correct answer: B. Harmful UV radiation
Explanation: The ozone (O<sub>3</sub>) layer absorbs harmful UV radiation from the Sun, protecting living organisms from DNA damage and cancer.
Energy pyramid showing a simple food chain (producer to herbivore to carnivore) with energy decreasing roughly tenfold at each trophic level.
Concept context
Ecosystems, food chains, energy flow, nutrient cycles, biodiversity, and conservation.