Answer:
Water is contaminated with animal waste
Explanation:
Eukaryotic cells have evolved from prokaryotic cells is not in the cell theory. Have a good day!
<u>Answer:</u>
<em>B.the increase in temperature and volume of water that runs into rivers and streams</em>
<u>Explanation:</u>
<em>The severity of a flood deeds on the increase in temperature and volume of water that runs into rivers and streams</em>. Increase in the temperatures changes the <em>wind’s direction</em> and there is a more chances for <em>rain fall in these climate. </em>
Due to which there is a loads of water accumulated in this period of time due to which there is always a <em>flood due to the heavy rains</em>. The physical cause due to flood is <em>cause of heavy rainfall steep slopes and wet soil.</em>
Answer:
b. a fluid-mosaic of phospholipids and proteins
Explanation:
According to the currently accepted structure, the cell membrane is made up of two layers of amphipathic phospholipids in which proteins are embedded or present. The hydrophobic tails of phospholipids make the core of the membrane. These tails are not covalently attached to each other and are free to move laterally. Likewise, the protein molecules float in the fluid bilayer. This mosaic pattern is not static since the positions of the proteins in the bilayer are constantly changing. The fluid mosaic model to explain the structure of the cell membrane was given by S.J. Singer and Garth L. Nicolson in 1972.
