First Conditional: The streets will be cleaner if we pick up trash, We won't have enough trees if we cut them, If we recycle at school, we will produce less waste, If we plant vegetables, we won't have to buy them, If we save energy, we will pay less, Zero Conditional: You help the seas if you use less soap, You save water if you hut off the pipe, If it doesn't rain for a long time, plants don't grow, If you eat healthy, you're body feels better, If you use the bycicle, you reduce pollution,

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