What is the meaning of security breach​

someone

getting into or entering a facility or file they are not supposed to be in.

Explanation: :) hope this helps

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.