The Most Common Service Pressure Indicated on an Oxygen Cylinder

question 27

Multiple Choice

The most common service pressure indicated on an oxygen cylinder that is followed by a (+) sign is ___________.

• A) 50 psi
• B) 2200 psi
• C) 2015 psi
• D) 2 psi

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Definitions:

Evolutionary Process

A gradual development mechanism in biological organisms over generations through natural selection and genetic variation.

Limiting Resource

A resource that is in shortest supply, thus limiting the growth, abundance, or distribution of an organism or a population of organisms.

Resource Partitioning

The process by which competing species use the environment differently in a way that helps them to coexist.

Competitive Exclusion

A principle in ecology that states two species competing for the same limited resource cannot coexist at constant population values, one will always outcompete the other.