Write an expression to detect that the first character of userinput matches firstletter.

Explain how you might determine the rate of weathering on a sample rock

Living organism in our word are connected to other variety of ways

Zachary has been trying to work on an essay for almost three hours, be he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesnt suffer because of poor concentration and lack of energy