1) How long does it take for a plastic bottle to decompose? a) 15 years b) 450 years c) 100 years d) 500 years 2) Which of the following materials never decomposes? a) Paper b) Glass bottle c) Orange peel d) Styrofoam 3) What is the primary cause of marine pollution? a) Natural disasters b) Human activity c) Volcanic ash d) Agricultural runoff 4) How does light pollution affect marine organisms? a) It increases the water temperature b) It causes physical harm to marine life c) It disrupts natural light cycles d) It increases oxygen levels in water 5) What is a significant contributor to plastic pollution in the ocean? a) Single-use plastics b) Reusable bags c) Recyclable plastics d) Metal containers

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