Ground water is water which is located below the soil surface and contained in the pore spaces of bedrock, sand, gravel, and other such materials.
the researchers concluded that more water probably exists deep within the Earth than is present on Earth's surface—as much as five times more.
Most ground water originates from precipitation that soaks into the ground. The ground water system as a whole leads the water in the general direction of the ocean.
The water table is the surface where the water pressure head is equal to the atmospheric pressure. It may be conveniently visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity.
Answer:
Red blood cells in blood type A-positive individuals have the A antigen, and generate antibodies against the B antigen (option B).
Explanation:
The basis of compatibility by blood group, according to the ABO system, is due to the presence of surface antigens A and B in the red blood cells. When a specific antigen is present, the body recognizes it as its own, while the other antigen will be recognized as foreign, and will induce antibody synthesis.
Blood types are determined by the presence, or absence, of these surface antigens A and B, generating antibodies against the antigens it does not possess, which can be summarized:
- <u>Blood type A</u><u> </u>has surface antigen A, but antibodies against B.
- <u>Blood type B</u> has surface antigen B, and antibodies against A
- <u>Blood type AB</u> has both A and B antigens, so it does not generate antibodies
.
- <u>Blood type O</u> has no antigens, but can produce antibodies to both antigens.
Individuals' blood type is a genetically inherited trait
Electricity black outs lightning and loud noises
Light that passes through a polarizing filter is called a vacuum.
