Some isotopes are radioactive, which makes them suitable for medical imaging procedures. Radioactive isotopes have found a wide range of use in medicine. For example, they are used as tracers for diagnostic as well as research on metabolic processes. They are also used in medical imaging procedures, these isotopes include fluorine-18, gallium-67 among many others.
Answer:
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B ~ You cannot tell if someone was touching your hand
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Answer:
Parallel veins in the leaf
Explanation:
The leaf veins run parallel to one another.