When Life First Evolved the Oceans Were

question 28

Multiple Choice

When life first evolved the oceans were

• A)hotter and there was more oxygen than today.
• B)hotter and there was less oxygen than today.
• C)cooler and there was more oxygen than today.
• D)cooler and there was less oxygen than today.

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Definitions:

Pulmonary Trunk

The major blood vessel that carries blood from the heart to the lungs for oxygenation.

Aorta

The main and largest artery in the body, responsible for distributing oxygenated blood from the heart to all other arteries.

Great Cardiac Vein

A vein that runs along the heart's surface, collecting deoxygenated blood from the myocardium.

Anterior Interventricular Branch

An artery that supplies blood to the front of the septum of the heart, part of the coronary circulation.