Answer:natural selection Genetic direction and gene flow
Explanation: I was just Researching this topic
Researching this topic
A I believe, hope it helps.
Oxygen atoms in a water molecule are partially negative, so the sodium ions (Na+) should be drawn to them... vice versa, the Hydrogen in a water molecule is partially positive... which should interact with the negatively charged chlorine (Cl-) ion.
The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA. Two other critical organelles are mitochondria and chloroplasts, which play important roles in energy conversion and are thought to have their evolutionary origins as simple single-celled organisms.