B. the recessive allele is masked in heterozygotes
Answer:
<u>C</u><u>.</u><u> </u><u>It</u><u> </u><u>protects</u><u> </u><u>us</u><u> </u><u>from</u><u> </u><u>radioactive</u><u> </u><u>particles</u><u>.</u>
Explanation:
it prevents the Earth from ultraviolet radiation and other harmful substances from space. One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds
Answer:
c. because arteries carry high pressure blood from the heart
Explanation:
Arteries carry the oxygenated blood that is pumped directly from the left ventricle of the heart. Since they receive blood from the heart, the blood pressure is higher in arteries than veins. To withstand the higher pressure of blood pumped by heart, arteries have thicker walls than the walls of veins.
Answer: C.) Leaf
Explanation: Leaves are the main sites for photosynthesis which is the process by which plants that synthesize food. Most leaves are usually green, due to the presence of chlorophyll in the leaf cells.
I hope this helps. :)