How do you determine when?

Solids have fixed shapes and volumes. Liquids have more or less a fixed volume (but may be moderately compressible). They take on the shape of their container. Gasses take on the shape and...

That is a true statement. We make choices and we are judged by the choices we make.

Both are true. It is a two-way street.

Yes. Buyers want a product and those that sell it regulate how much of it they sell to the buyers, therefore controlling the supply as a result of the demand.

If she talks about him alot or you can be real and upfront and ask her. If she talks about him alot or you can be real and upfront and ask her.