Which of the Following Is Not One of the Requirements

question 84

Multiple Choice

Which of the following is not one of the requirements that must have existed for the chemical evolution of life on Earth to have occurred?

• A) a source of energy
• B) availability of chemical building blocks
• C) oxygen (O₂)
• D) time
• E) carbon dioxide

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Definitions:

Cephalic Vein

A large vein on the outer side of the upper arm, draining blood from the hand and forearm into the shoulder's subclavian vein.

External Jugular Vein

A vein located on the outside of the neck that drains blood from the head, neck, and upper chest into the superior vena cava.

Radial Vein

A vein that accompanies the radial artery and drains blood from the lateral portion of the forearm.

Forelimb

The front limbs of an animal that in humans refer to the arms, including structures from the shoulder to the fingers.