In Which Respect Are Flat and Positively Curved Universes Alike

question 36

Multiple Choice

In which respect are flat and positively curved universes alike?

• A)They are both infinite
• B)Neither can expand
• C)Neither has a center
• D)The sum of the angles of a triangle is 180 degrees in both

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Definitions:

Hormones

Chemical messengers produced by endocrine glands that regulate various bodily functions by traveling through the bloodstream to target organs.

Complement

Group of serum proteins that stimulates phagocytosis and inflammation.

Classical Pathway

Part of the specific immune system for activation of complement.

C3

A protein component of the immune system's complement system, which enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism.