Examlex
Before making any changes to an open file, you should use the ____ command to save a copy of it with a new name, which keeps the original file intact in case you want to use it again.
Acid-Base Buffers
Solutions that minimize changes in pH when an acid or base is added, helping to maintain a stable environment in biological systems.
Open Circulatory System
A type of circulatory system where blood is not always contained within vessels but flows freely through cavities in the body.
Pumping Organ
This usually refers to the heart, an organ responsible for circulating blood throughout the body by rhythmic contraction and dilation.
Arteries
Blood vessels that carry oxygen-rich blood away from the heart to all parts of the body.
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