So that they don't explode.
AKA with a thing called osmosis (transportation of water through cells.)
The correct answer should be
<span>What setting is best for producing the most eggs?
If they're looking at content of the nest, then it's not about their safety but rather about the amount of eggs they make. He is checking how the habitat influences the amount of eggs created.</span>
Phospholipids makes up majority of the cell membrane. Transmembrane proteins comes in second place.
<span>Current understanding of the evolutionary relations among organisms may change, as more species are discovered and studied.</span>
