Please help I asked this question earlier ans nobody answered. :(​

What two properties affect the density of ocean water

In a short paragraph, describe your hometown in terms of its population and impact. do you live in a town or a city? is your home a higher-order or lower-order settlement? how does your hometown interact with other towns in its region? (houston)

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?