Answer: When there is high magnetic activity, there are more sunspot, this sunpost emit more ultraviolet and visible radiation from the sun.
Explanation:
Sunpost are the most dark and cool area on the sun photosphere. The are like storm on the the sun surface and are characterized by high magnetic field. The originate from the sun and influence galactic rate. They emanate as pair of magnetic disturbances around the sun surface thereby emitting for charged particles from the sun surface which lead to increase in emittion of ultraviolet radiation and visible radiation from the sun.
Answer:B). Cell membranes are composed of a lipid bilayer.
Explanation: A membrane is a lipid bilayer that surrounds the cell. Lipids have two parts: the fatty acid chain (the tail) and the phosphate group (the head).
The phosphate head groups are polar, face outward and interact with the outside environment of the cell. The fatty acid chain is hydrophobic and nonpolar, face each other in the bilayer thus forming a hydrophobic fluid interior.
The hydrophobic nature of the bilayer interior makes the membrane to permit only nonpolar and hydrophobic molecules to pass through the cell membrane. This is the reason the membrane allows only molecules that dissolve in the lipid bilayer to pass through to enter or leave the cell.
The answer is D.
Heterozygous individuals pass the dominant and recessive alleles to offspring.
Answer:
Directly counting blood cells or tissue cells by using a hemocytometer can determine the concentration of a known volume. Counting the number of colonies that arise on a pour plate can calculate the concentration by multiplying the count by the volume spread on the pour plate.
Water is
Water is a Liquid