Depending upon its composition, each type of coal burns differently. the "older" the coal, the harder the coal, and the greater percentage of present. a) carbohydrates b) carbon c) oxygen d) water

Adescription of a type of bio biotechnology (genetic engineering, cloning, or artificial section) one benefit or one risk for the individual (based on whether you are for or against it) one benefit or one risk for society (based on whether you are for or against it) one benefit or one risk for the environment (based on whether you are for or against it)