The hydrosphere consists of all Earth’s water, including the oceans, lakes, and rivers. The atmosphere consists of all Earth’s air, such as the nitrogen and oxygen that surround the planet.Which of the following scientists would be most likely to apply his or her knowledge of the hydrosphere and the atmosphere while at work?

The Science section of the GED lasts 90 minutes and contains 50 questions. The science section tests your ability to work with science information from life science, physical science, and earth and space science.