Choose all the answers that apply. Erosion can be reduced by .

contour plowing
putting up fences
cutting down trees
removing topsoil

What material does not melt at any temperature

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?

Chris is about to do an experiment to measure the density of water at several temperatures. his teacher has him prepare and sign a safety contract before beginning the experiment. which term is mostlikely part of the safety contract