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Earth Day Crossword Puzzle

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Earth Day

                    1         2            
            5                         6    
    9           10                          
                    14   15                  
          16 17               18              
Across Down
1 a species dying out
7 the study of how living and nonliving things interact
8 processing waste items so the materials they are made of can be used to make new items
9 a gas high in Earth's atmosphere that blocks some of the harmful radiation from the sun
10 all the living and nonliving things that interact with each other in an enviornment
11 the act of producing or sending out something
12 something that can be replaced in a person's lifetime
13 the air that surrounds Earth
16 something that is renwable
19 anything in the ecosystem that can harm living things or damage natural resources
2 a wise use and protection of natural resources
3 grown or made without the use of artificial chemicals
4 a mixture of soil and decayed material that provides nutrients for plants
5 to conserve or protect
6 relating to the sun
10 the surroundings that an organism lives in
14 garbage that people throw on the ground in public places
15 a home for living things
17 the process of converting waste materials or useless products into new materials or products
18 a place where garbage is dumped
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