Explanation:
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In object in motion stays in motion; speed
Answer:
Comparison Microscope
Explanation:
The Comparison Microscope allows for comparison between two objects or samples by placing them side by side.
It is primarily used in criminology for ballistics which makes it ideal to find out if bullets, shells, or cartridge cases were fired from a specific weapon.
Answer:
Voltage-gated calcium ion channels open, and calcium ions diffuse into the cell