Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
Number of neutron = mass number - atomic number
= 163 - 58
Number of neutrons of element X is 105.
<u>W</u><u>hy does facilitated diffusion happen</u><u>:</u>
<em>~</em><em> </em><em>I</em><em>t regulates what goes in and what goes out of the cell</em>
<em> </em><em>~</em><em>T</em><em>he cell membrane is permeable to only a select few types of molecules</em><em> </em><em>and</em><em> </em><em>t</em><em>h</em><em>e molecules that are allowed to move across the cell membrane must be non-polar molecules which are small in size</em>
<u>W</u><u>hat direction the particles diffuse in</u><u>:</u>
<em>~</em><em>F</em><em>rom one side of the membrane where the substrate concentration is high to the other side of the membrane where the concentration is lower</em>
<em>~</em><em>D</em><em>iffuses across membranes down the concentration gradient</em>
<u>T</u><u>he molecules that help in this process</u><u>:</u>
<em>~</em><em>carbohydrates, amino acids, nucleosides, and ions</em>
Hope this helped you- have a good day bro cya)
A) The earth spins
The Earth is constantly spinning, or "rotating", which causes day and night
You have to fill out the chart first so itll be GG, Gg, Gg, gg for the chart ( left to right)