Weather is the current state of the atmosphere and is determined by factors like temperature, pressure and humidity wind
In order to study winds you have to study the atmosphere
The sequence of B) nucleotides in a DNA molecule determines the protein that will be produced.
Chromosomal deletion is the loss of genetic code, caused by a segment of chromosome breaking away during DNA replication. The best answer is the third one, "when part of a chromosome breaks off and does not reattach."