The Hydrologic Cycle Doesnʹt Include Water

question 59

Multiple Choice

The hydrologic cycle doesnʹt include water

• A)in the atmosphere.
• B)from the liquid outer core.
• C)at a depth of up to several kilometers below the surface.
• D)at the surface of Earth and in the oceans.

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Definitions:

Natural Killer Cells

A type of lymphocyte (white blood cell) that plays a major role in the rejection of tumors and cells infected by viruses.

Interferons

A group of signaling proteins made and released by host cells in response to the presence of pathogens, such as viruses, bacteria, or tumor cells.

Antigen-Presenting Cells

Cells that process and present antigens to T-cells to initiate an immune response.

Major Histocompatibility Complex

Major Histocompatibility Complex is a set of genes that code for proteins on the cell surface, which help the immune system recognize foreign substances.