Final answer:
Tissues can be ordered from darkest to lightest as follows: bone/contrast, muscle/solid organs, fat, air/lung.
Step-by-step explanation:
In terms of darkness, tissues can be ordered from darkest to lightest as follows:
- Bone/contrast (darkest)
- Muscle/solid organs
- Fat
- Air/lung (lightest)
This order is based on the density and composition of each tissue. Bone/contrast is the darkest because it is the most dense and contains minerals.
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