Explain how having a advantageous heritable trait will increase in a population and those who lack it will decrease in numbers.

That is, the differential survival and reproduction of organisms in a population that have an advantageous heritable trait leads to an increase in the proportion of individuals in future generations that have the trait and to a decrease in the proportion of individuals that do not

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

so yes an egg will float in salt