What does a weve carry

Waves carry energy from one place to another. Because waves carry energy, some waves are used for communication, eg radio and television waves and mobile telephone signals. There are many types of waves including sound waves, water waves and all the parts of the electromagnetic spectrum.

Explanation:

of those who start drinking before they're 15 will develop alcohol dependence

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.