All of the Following Statements Are True

question 17

Multiple Choice

All of the following statements are true.Which one explains the reason why there is not a solar eclipse at every new Moon?

• A)The nodes of the Moon's orbit precess with an 18-year period.
• B)The orbital plane of the Moon is tilted by about 5° to the ecliptic plane.
• C)The Moon rotates synchronously with its revolution about Earth.
• D)The sidereal month is shorter than the lunar month.
• E)The Moon is the primary cause of tides on Earth.

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Definitions:

CD8

A protein found on the surface of immune cells, like T cells, playing a crucial role in the body's defense against infection and cancer.

Progenitor

An ancestor or parent in a direct line of descent, often used to describe the earliest originator or precursor of a particular lineage or group.

Plasma Cell

A type of white blood cell that produces and secretes large volumes of antibodies, playing a critical role in the immune response.

Antigen Presenting Cells

Immune cells that process and present antigens to T-cells, initiating an immune response.