Which of these is a type of nonpoint-source pollution that might occur on a farm? a. excess salt deposited in the soil when irrigation water evaporates b. excess pesticide deposited in a dump after a treatment c. oil dripping from the pump for a water well d. old bags of nitrogen fertilizer left in a leaky barn

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

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Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.