A geographer is interested in studying how and why the environments of the Amazon Rainforest and the Andes Mountains are different. Which essential element of geography would the geographer use to complete this research?

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater

The soviet union and the united states believed in two very different economic systems. what were the names of each?

Which of the following is not a requirement to become a us representative (congressman/congresswoman)?