Soil and soil fertility

2. This is determined by the volume percentage of pore space in a lump of soil
5. This type of soil forms a nice surface on which cricket is played
8. Germination of seeds is more rapid under these types of temperatures
9. These add nutrients to the soil to improve its fertility
10. a type of physical weathering that occurs when large, curved, or flat sheets of rock break away from a rock outcrop
12. This makes up about 25% of soil
13. Minerals in rocks combine with oxygen in the atmosphere or the oxygen that is dissolved in rainwater
16. Earthworms and bugs are examples of these
18. This type of rock is formed as a result of volcanic eruption
19. Any material added to a soil to supply ingredient which improves the fertility of the soil

1. To deposit or dispose of (rubbish, waste, or unwanted material), typically in a careless or hurried way
3. This gas is needed for respiration by plant roots and soil organisms
4. A vertical slice of soil to expose its layers
5. A process by which organic matter rots to form manure
6. This together with organic matter make up fifty percent of soil
7. Trees are cut down to make way for the building of houses
11. These are constructed to get rid of excess water
14. Some soil samples are wet then kneaded or---- to get a desired shape
15. This soil can hold no more water
17. This refers to the fineness or coarseness of the soi
20. The removal of soil