Subsistence agriculture is a form of farming where a family or community harvests groups for their personal consumption while market-oriented agriculture relies on the harvest of cash crops
Nuclear fusion because the sun has massive gravity that squeeze hydrogen atoms together and fusing them into helium which releases energy
<span>As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition. However, the classifiction of metamorphic rocks is more difficult to get into than with igneousand sedimentary rocks, for a couple of reasons.</span>Oct 25, 2000
