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3
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happens when rocks or soil are moved by water or wind. Plants can help prevent this.
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7
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useful materials that come from the earth
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9
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are examples of natural resources that cannot be replaced
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10
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is litter on the ground
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12
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caused by water and ice or temperature changes. The breaking apart and changing of rocks
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16
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are rocks, copper, gold, iron, silver and quartz
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17
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is a big rock. Rocks are made from minerals
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18
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is a safe place for plants and animals
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19
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is the adding of harmful things to land, air or water. It can affect living things.
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20
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non-living materials that come from earth,
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22
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by reducing the amount of things used and reusing things
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1
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need the right kind of soil to grow. Are used to build homes and make food and paper
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2
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both fresh and salt, is a natural resource that plants, animals and people need to live
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4
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are natural resources that can never be used up
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5
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are natural resources that can have many shapes, sizes and colors
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6
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is a mineral used to make glass
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8
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is made up of tiny pieces of rock broken off large rocks by wind, rain and icce
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11
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reduces pollution by changing something so it can be used again
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13
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a natural resource that covers most of the land. Made from mixture of clay, sand and humus
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14
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is a mineral used to make pots
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15
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work together to reduce pollution
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21
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is a natural resource that plants, animals and people need to live
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23
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is an example of a natural resource that can be replaced
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