Help her pls

All sounds come from sound waves that are perceived by our ears. Although they are from the same thing there are different frequencies and vibrations specific sounds produce which are unique.

I hope this helps :)

earlier philosophers whose work influenced the enlightenment included bacon, descartes, locke, and spinoza. the major figures of the enlightenment included beccaria, diderot, hume, kant, montesquieu, rousseau, adam smith, and voltaire. it spread the ideas of the enlightenment across europe and beyond.

they protect against unsafe foods and medicines being sold

explanation: