Boundaries between the continents of Earth Boundaries between the continents of Earth The boundaries between the continents of Earth are generally a matter of geographical convention. Several slightly different conventions are in use. The number of continents is most commonly considered seven but may range as low as four when the Americas and Afro-Eurasia are each considered a single continent. According to the definition of a continent in the strict sense, an island cannot be part of any continent, but by convention and in practice most major islands are associated with a continent. There are three overland boundaries subject to definition: While the isthmus between Asia
This is My Earth of ecologists and environmental leaders representing every continent, all working to save biodiversity through the conservation of critical habitats around the world. Dr. Gerardo Ceballos Dr. Paul R. Ehrlich Dr. Nick Haddad Dr. David Mutekanga Dr. Simone Oigman-Pszczol Dr. William (Bill) Ripple Dr. Uri Shanas Dr. Jian Wu Ms. Francine Alfandary Mr. David Baldock Dr. Dror Ben-Ami Mr. Henry Gold Dr. Deborah Goldberg Dr. Clive G. Jones Ms. Josephine Kishapoi Dr. Konstantinos C. Makris Ms. Wanjira Mathai Ms. Kirsten Oates Dr. Uri Shanas Ms. Ondine Sherman Dr. Alon Tal This is My Earth This is My Earth (TiME) is a