The total amount of a product available in a market at a given price is called the

count.
demand.
number.
supply.

Supply

The stock of a commodity refers to the volume of a product accessible in the market for sale during specified period. Both commodity and market price of a product influences its supply to a higher degree.

Supply will determine the current value of the market. When there is an increase in supply, in this scenario the cost will be reduced because it will be easier to obtain the products.  However, when the supply of the products decreased, the price will be raised according to the demand because the product will be difficult to obtain.

well it depends i think people around the world are coming around to gay marriage. but if you are talking abortion then wow, so much to talk about. such as men thinking they have the right to choose if women can, the fact there are health concerns if the women can't get one, and many more arguments to discuss. so i would definitely say abortion would be a much more interesting topic.

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )