Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid?

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Nonpoint source pollution is difficult to control because it

Which of the following describes a situation where competition between producers exists