Hello.
The answer is: A. the buoyancy of water
hydrometer is an instrument used to measure the specific gravity of liquids; that is, the ratio of the density of the liquid to the density of water, Used for measuring the relative density of liquids based on the concept of buoyancy.
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Answer:
Some kind of neuron
Explanation:
I'm sorry I'm not too sure- it's some kind of neuron. It may be a motor Neuron? Try looking it up.
The medial indentation on the kidney called hilum....
hope it's help ;)
I think so
(Sorry if I’m wrong)