1. Calculate the mass of 180 molecules of C3H6. The atomic masses and H are 12.01 amu/atom and 1.008 amu/atom respectively.

The impact of a large asteroid comet with earth has been proposed to have caused the extinction of the dinosaurs. the impact site of this comet is in or near

What is a small water source like a stream or brook?

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water