https://ed.ted.com/lessons/the-carbon-cycle-nathaniel-manning Cycles of Matter https://ed.ted.com/lessons/the-carbon-cycle-nathaniel-manning

What processes are involved in the water cycle? The process of evaporation, condensation, and precipitation make up the water cycle Evaporation – the process by which molecules of liquid water absorb energy and change to a gas Condensation – the process by which a gas changes to a liquid Precipitation – the process by which condensed water falls to earth What processes are involved in the water cycle?

How are the carbon and oxygen cycles related? Most producers take in carbon dioxide from the air during photosynthesis They use it to make sugars and starches When consumers eat the producers, they take in these carbon molecules for energy Then the release carbon dioxide back into the environment The process by which carbon and oxygen are recycled are linked.

Producers release oxygen as a result of photosynthesis Most other organisms take in oxygen from the air and use it for cellular respiration The oxygen cycle

How does nitrogen cycle through ecosystems? Most organisms can only use nitrogen after it has been “fixed,” or combined with other elements to form nitrogen containing compounds There are nitrogen “fixing” bacteria in soil, in the roots of legumes In the nitrogen cycle, nitrogen moves from the air, into the soil, then into living things, then back into the air or soil

Return of nitrogen into the environment Once nitrogen is fixed, producers can use it to build proteins and complex compounds At some point, bacteria break down the nitrogen compounds completely These bacteria then release it back into the atmosphere again Return of nitrogen into the environment

Lightning Lightning, ever time it strikes, also fixes nitrogen It is the only other known way nitrogen is fixed

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