Resources

• University Tecmilenio (2017): Ecology and Geography: The Earth a body of the Solar System: Recovered from: https://miscursos.tecmilenio.mx/webapps/blackboard/execute/content/file?cmd=view&content_id=_2447788_1&course_id=_86663_1&framesetWrapped=true

• Dr. Mamta Patel Nagaraja (2017): Universe: Galaxies: Recovered from: https://science.nasa.gov/astrophysics/focus-areas/what-are-galaxies