Khan Academy 1d ago

Earth is the perfect planet for life as we know it! It orbits the Sun in the habitable zone, where planetary temperatures allow water to exist as a liquid. Scientists believe this is important because life as we know it requires solution-based chemistry, and water is a very common and versatile solvent. Earth also has a breathable atmosphere that keeps the planet warm, an ozone layer to protect against UV light, and a magnetic field that shields the planet from the harmful solar wind. ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc