Which substance is used in lotions and cosmetics? ammonium hydroxide
acetic acid
formic acid
zinc hydroxide

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Could someone me find the answer to this problem.

Which of the following are guidelines to follow for obtaining accurate observations