1) If the experiment works, we'll grow our own food in space. a) ZERO b) FIRST 2) If you don't water the plants, they die. a) ZERO b) FIRST 3) If you freeze water, it turns into ice. a) ZERO b) FIRST 4) If we use too much water, we won't have enough water to drink. a) ZERO b) FIRST 5) If astronauts don’t follow this cycle, they'll get sick and feel strange. a) ZERO b) FIRST 6) If astronauts leave a plant on the moon, it dies. a) ZERO b) FIRST 7) If the spacecraft has a problem, the crew will solve it. a) ZERO b) FIRST 8) If they sleep in a place where there’s no ventilation, they suffocate! a) ZERO b) FIRST

ZERO OR FIRST CONDITIONAL?

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