Science Crossword
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
                                     
 
 
Down: 1) all of the organisms that live a region.2) starting material of soil4) combines the element oxygen with other elements or molecules.6) layers of soil from the movement of the products of weathering.9) the physical and chemical processes that change objects on Earth's surface overtime.11) a mixture of weathered rock, sediment, decayed organic matter, matter, water and air. Across: 3) the shape and steepness of the landscape.5) changes the materials that are part of a rock into new materials7) average weather of an area8) physical processes that naturally break rocks into smaller pieces.10) small holes and spaces in soil.12) the remains of something that was once alive.13) process of changing once living material into dark colored organic matter.
 

 

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