1) a way to solve a problem a) cheap b) landfill c) solution 2) a place where trash is sent and put in the ground a) cheap b) landfill c) solution 3) not costing a lot of money a) cheap b) landfill c) solution 4) a block that stops things from getting past a) poison b) barrier c) surface 5) the top part of something a) poison b) barrier c) surface 6) to give something to a living thing that kills or causes sickness a) poison b) barrier c) surface 7) strong; long lasting a) durable b) ecosystem c) marine 8) having to do with the sea a) durable b) ecosystem c) marine 9) a system made up of all the living and non living things and the environment where they live a) durable b) ecosystem c) marine 10) to make something smaller in size or amount a) durable b) reduce c) marine

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