You are presented with the question "Heating with coal can cause " and the following answer choices: - Electrical energy - chemical reaction - automobile exhaust - Something to move - air pollution - distracted driving - electric outages - Dehydration Now knowing that coal is used for generating heat by burning and coal burning can cause air pollution and generate carcinogens, choose the best answer.
air pollution
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You are presented with the question "Hydropower can devastate a what?" and the following answer choices: - salmon - rocks - air - plants - soils - homes - river - habitat Now knowing that hydropower requires damming a river and scientists agree that dams devastate rivers, choose the best answer.
river
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You are presented with the question "Smoking will decrease the flow of what in the body?" and the following answer choices: - oxygen-rich blood - blood clots - preventing heat transfer - heat energy - electric current - all liquids - layers of fat - ashes Now knowing that arteries generally carry oxygen-rich blood and smoking constricts arteries and increases clotting to block arteries, choose the best answer.
oxygen-rich blood
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You are presented with the question "What do plants build their cell walls from?" and the following answer choices: - By wind and rain - Deposition - Deposition. - algae - Chemical energy - plant wall - plant material - polysaccharides Now knowing that plants use cellulose for their cell walls and another important polysaccharide is cellulose, choose the best answer.
polysaccharides
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