Why do you pair up the first two electrons?

Two electrons spinning in opposite directions have oppositely aligned magnetic fields, which allows them to come together as a pair.

Explanation:

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).