Biology
Homeostasis is the condition in which the body maintains

A changing state within an unlimited range
A static state with no deviation from preset points
A relatively stable internal environment within limits
The lowest possible energy usage

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Biology
Which of the following is not true of colour blindness?

Colour blind people learn to rely on shapes, patterns, and positions of signs and signals
Red-green colour blindness is the most common type of colour blindness
For some people, it might be difficult to recognize colours of traffic lights and signs
A colour blind person cannot see any colours

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