Sullivan was able to teach Keller successfully by fingerspelling, gesturing, using Braille, and vocal training. Some obstacles that Keller faced learning to sign without seeing her instructor would most likely include having to learn sign through muscle memory and visualization in her head instead of seeing and repeating. Sullivan had to be strict and push Keller to be repetitive in learning the Signs while having to hold Keller's hands to show her how to sign and she could describe signs by fingerspelling.
Answer:
Harappan civilization, Aryan migration,Persian Empire,Mauryan Empire,Gupta Empire
Explanation:
Harappan civilization 2500 - 1700 BC
, Aryan migration 1800 - 1500 BC
,Persian Empire 559 - 331 BC
,Mauryan Empire 322 - 181 BC
,Gupta Empire 320 - 550 BC
Copper sulfate and water will be the chemical species that were left in the beaker.
The inorganic material known as copper sulfate is created when sulfur and copper are mixed. It has the power to destroy roots, plants, algae, fungi, and snails. The level of hazard in copper sulfate depends on the amount of copper. In the US, the use of copper sulfate in pesticide products has been permitted since 1956.
Sulfuric acid, also known as sulphuric acid or oil of vitriol in the past, is a mineral acid made up of the elements hydrogen, oxygen, and sulfur with the chemical formula H₂SO₄. It is a viscous liquid that is miscible with water. It has no color or smell.
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