Fill in the Blanks THE SPHERES OF THE EARTHOnline version Complete a text about the spheres of the Earth by Valle del Moral 1 biosphere islands solid continents crust water magma liquid rocks geosphere protects hydrosphere nitrogen core atmosphere iron oxygen ocean mantle The is the layer of gases which surrounds the Earth . The atmosphere consists mostly of , buit it also contains , carbon dioxide and other gases which are esential for life on Earth . The atmosphere the Earth from harmful ultraviolet radiation and helps maintain the Earth's temperature . The is all the water that exists on Eartk . Water covers about the planet . We can find in all three states of matter : solid , liquid and gas . The is the solid part of the Earth . It is made up of three layers : the core , the mantle and the crust . The is the hottest part of the Earth and it is made of . The outer core is metal . The inner core is because the pressure here is so strong that the iron solidifies . The surrounds the core . Heat and pressure in the mantle can melt rock . This liquid rock is called . The is the outer layer of the geosphere . It is made up and minerals . The crust forms the , the and the floors . The crust is thicker under the continents than under the oceans . The is composed of all living organisms : animals , plants , fungi and microorganisms . It includes all the ecosystems on land an in the ocean and rivers .
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