Prior to Reaching the Main Sequence,a Protostar's Energy Comes Mostly

question 20

Multiple Choice

Prior to reaching the main sequence,a protostar's energy comes mostly from

• A) gravitation.
• B) nuclear fusion.
• C) nuclear fission.
• D) natural radioactivity.

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Definitions:

Erythrocyte

A red blood cell that is responsible for carrying oxygen throughout the body.

Hematocrit

A measure of the volume percentage of red blood cells in blood, used to detect anemia, dehydration, and other conditions.

Erythrocytes

Red blood cells that carry oxygen from the lungs to the body tissues and carbon dioxide back to the lungs.

Anemic Cells

Anemic cells refer to blood cells, typically red blood cells, that are deficient in hemoglobin, leading to reduced oxygen transport and symptoms of anemia.