Phosphorus Cycle Crossword Puzzle

QUESTIONS LIST:

• weathering : phosphorus on earth is tied up in rock and sedimentary deposits, from which it is released by _
• lithosphere : the rigid outer part of the earth, consisting of the crust and upper mantle.
• plants : phosphorus is a key nutrient for the growth of _ .
• hydrosphere : all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
• runoff : the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure.
• eutrophication : when a body of water becomes overly enriched with minerals and nutrients which can cause excessive growth of algae
• decomposition : the state or process of rotting/ decay.
• animals : a step of the cycle is when phosphorus is absorption by plants and _ .
• phosphorus cycle : biogeochemical cycle that describes the movement of phosphorus
• dead zone : this causes an overgrowth of algae which creates a _ _ due to the lack of oxygen in the water.
• biosphere : the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms.
• phosphorus : a chemical element found in water, soil and sediments.