The average annual rainfall in dubuque lowa is 36 inches. if the rainfall contains 0.5 ppm of nitrogen, how much nitrogen is added to the soil in dubuque in an average year?

Most tornadoes carry winds speeds in a range of km per hour

Islam and the arabic language spread throughout north africa in the 600s primarily through a. african traders b. american colonists c. european explorers d. middle eastern armies select the best answer from the choices provided

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.