<em>Active transport</em><em> uses </em><em>cellular energy</em><em> to </em><em>move molecules</em><em> based on the </em><em>concentration level</em><em> and </em><em>Passive transport doesn't</em><em> require </em><em>energy</em><em> to </em><em>move molecules within</em><em> their </em><em>cells</em><em>.</em>
<u>EXPLANATION: </u>
Active transport uses cellular energy for this movement. It uses energy stored in ATP to begin the transport. This means that the molecules transfer from an area where it is less in number to an area with a high concentration of molecules.
But Passive transport specifies the movement of molecules across cell membranes which doesn't require energy as it depends on the cell membrane's penetrability. Molecules just have to circulate in or out of the cell.
It is observed that the human population keep increasing significantly and it began to increase noticeably around 10,000 years ago.The greatest factor of this increase is the rapid development of the agricultures in lands, as well as the domestication of animals. These are the reasons why population increases at that time.
Answer: Tissue that carries messages throughout our bodies is called nerves. Nerves conduct electrical impulses between the brain and brain stem to all parts
