Questions

The Law of Demand tells that, if the price of a product increases then the demand will go down i.e, decreases iff all other things equal.

Samuel Gompers was a leading proponent of workers' rights. He was the first president of the American Federation of Labor, an organization that represented skilled workers from many different industries. Gompers advocated using collective bargaining or negotiations and strikes to gain greater rights for workers.

Burning gasoline is the only process that involving in a chemical change in the given options. A chemical change is a change in the starting substances that are called reactants from the formed new substances that are called products. 

Slipped means to move with a smooth sliding option. Option-a drawn means showing effects of tension, pain or illness, the consequence of growth cannot always be low, so we cannot choose crept. Crept means to go very slowly, percolated means passed through a medium, therefore only option-2 follows.

The proteins of the electron transport chain are present in mitochondrial inner membrane in Eukaryotes.