When many water molecules come into contact with one another "they get attracted to each other".
<u>Explanation:</u>
When water molecules reach into contact of each other they start attracting each other with proper orientation as the positive end of hydrogen atom of one molecule coordinate or get attached with negative end of oxygen atom of another water molecule. This link also termed as "hydrogen bond".
These attractions or hydrogen bonds showcase the ease of polarity. But the interactions are considered as weak that form between a partial positive charge of hydrogen with a more electronegative atom like oxygen, nitrogen and fluorine.
Nutrition and building the cell membrane
<span>When the genes propagate from one area to another.
The founder effect happens when genetic diversity declines due to an external larger group of organism invades a set of current living population. An example of this process is when the British colonies invaded the Mesoamerican continent where native americans lived and were outrun by the British colones, especially since many wars were made and ethnic cleansing. </span>