The Main Chemical Building Blocks of Life, Carbon, Hydrogen, Oxygen

question 3

Multiple Choice

The main chemical building blocks of life, carbon, hydrogen, oxygen, and nitrogen were formed

• A) inside interstellar gas clouds during star formation
• B) in the center of the Earth and then ejected onto the surface via volcanism
• C) in the nuclear burning cores of stars and then ejected into space when they died
• D) in the Big Bang that created the universe

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Definitions:

External Jugular

Refers to the external jugular vein, which runs superficially in the neck and drains blood from the head and neck.

Femoral Vein

A major blood vessel in the thigh that carries deoxygenated blood from the lower limb back to the heart.

Subclavian

Relating to the area beneath the clavicle (collarbone), particularly regarding vessels and nerves in that region.

Subcutaneous Tissue

The layer of tissue found directly under the skin, primarily consisting of fat and connective tissues that cushion and insulate the body.