After formation, a star uses its fuel and burns brightly; however, upon the consumption of all of its fuel, the star is unable to maintain itself, just as the human body is. This causes the star to either collapse in on itself or burn out completely. Similarly, the life cycle of a human reaches its peak phase after a certain period of maturity and then becomes unable to maintain itself and deteriorates.
Hypothesis: If i increase the amount of string then the salt will dissolve faster
Independent variable: the amount you stir the liquid
Dependent variable: the time it takes to dissolve the salt
Materials: you need a beaker, salt, water, and a stir rod.
Answer:False
Explanation:
Acid rain is an indirect result of burning fossil fuels Acid rain occurs when sulfur dioxide and nitrogen dioxide are released into the atmosphere due to incomplete combustion of fossil fuels. Each of these oxides is mixed with rainwater to form sulfuric acid and nitric acid. Thus, acid rain is in fact an indirect result and is not a direct result of the release of acid when burning fossil fuels. This is because oxides are formed during combustion.
Mass= density*volume
5*3 = 15 grams