An airplane flies six hundred miles to the south; then, after landing and refueling, it flies due north for three hundred miles. what is the airplane's displacement? (remember, displacement is a vector, so direction needs to be indicated in your answer).

d =

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?

If we review the changes in the landscape surrounding the great salt lake in utah we can see a change in topography. look at the area to the south of the lake. what change has occurred during the last twenty-nine years? a) erosion of the hills b) an increase in marshland c) flooding of the area and the development of wetlands d) deposition of sediments and an increase in elevation

What is likely to happen in the long term if the earth continues to absorb more energy than it emits? a. the earth will discontinue recycling energy. b. organisms will begin to compensate for the change by incorporating more energy. c. the overall temperature of the earth will increase. d. the nutrient cycles will happen more frequently. select the best answer from the choices provided a b c d