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The Rock Cycle book has a compare/contrast structure.  I know this because on page 7 it asks what the mantel and crust share in common and what ways they are different.

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The Simple Science Of Rocks             On page 7 I think it is cause and effect because the cause is "Wind,water,snow,and ice break up rocks" and the effect is "The rocks wear down".

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It is chronological because it tells how the rocks formed in order.

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is compare and  contrast because it is comparing the rock cycle on page 12 and 13.

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It is chronological I know this because on page 10 it says the rock cycle in order from first, then, next, last.

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In Rocks,Minerals,and Gems on pages 99 and 100 it's Cause/Effect because volcanoes makes an eruption it lets out a lot of magma and when it drys it turns into a igneous rock.

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cause and effect
igneous rocks are formed by the cooling and hardening of hot, molten rock from within earths crust and upper mantle

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The book ''What are metamorphic  rocks'' has a cause and effect  structure. I know this because on page 6 it says '' metamorphism is the changing of a rocks chemical or physical composition, or makeup. Metamorphism happens because of new conditions around the rock.''

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This is compare and contrast. In rocks minerals and gems on page 158 it says there are 4 different kind of rocks and they are clarity,cut,color,and carat.

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Cause and effect I know  this because in the on page 6 and 7  it said that this big  snow ball was form  natural and because it was natural form it most of keep growing because no one took it.

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Rocks and minerals are cause and effect because on page 8 it says that all rocks are made up of minerals.The effect is each mineral has its own spacial shape, called a crystal.

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Rocks & Minerals By Neil Morris
I think it is cause and effect because on page 12 it said a rock can be changed by heat or by getting preshure.They cause is that it can be changed  by heat or preshure and the effect is that it changes.

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I know it is cause and effect because  when kings and queens had amethyst on there togas it mad people want to where it on there arms fingers and legs it is called jewelry.

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is compare and contrast i know this because on page 9 they are comparing rocks that are hard to find and that is easy to find.

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This page is chronogical I know this because it tells about the rocks in order.

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compare contrast Basalt( buh-sawlt) is a common rock formed from lava
page 24!!!!! other kind of rocks are there

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Rock And Minerals has chronological I know this because on page 21 it talks about how the grand canyon was made and it said it in chronological order.

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I  know this because   it is compare contrast   rocks  and minerals.

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This is cause and effectRocks and minerals, it says because of it's appearance , it is often confused with natrolite.

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I know this because in the text it is comparing a basketball to Earth on page 6.