How do you think diseases can affect natural selection ?

Organisms that are not fittest to their environment and do not have the "best" traits die out. The organisms with the better traits have an advantage and survive, thus being able to reproduce and thrive.
Hope this helped!!

Balkan nationalism increased tensions between austria and russia

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.