skin care · web viewapproximately _____ blood cells are replaced every second in your body. you...
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Cycling of Matter in Ecosystems (2.6)
Recycling Matter
• All life on Earth requires __________ and ___________• These particles of matter don’t remain in your body forever• Every part of ___________ _________ in your body is ______________
over time• We are like living ________________ machines• ___________________ from food are used to _______________ and
______________ all the _______________ in our body• Approximately ________________ blood cells are replaced every second in your body.• You are a fantastic recycling machine!!
Biogeochemical Cycles
• As matter cannot be _________________ or _________________, it must be produced or obtained from chemicals that already exist in the environment.
• Therefore ____________________ _______________ involve movement of matter (cycles) through the ________________ and _________________ environment on earth.
• These cycles are: 1. __________________ Cycle
2. __________________ Cycle
3. __________________ Cycle
The Water Cycle
The series of processes that cycle water through the environment
Transpiration & Evaporation• Liquid water ___________________ forming water ________________ that travels
through the __________________• Water that is taken in by ____________ _______________ is released by
______________ through ________________
Condensation• The ______________ eventually _______________________• It forms _______________ water or ice crystals in the ______________________
Precipitation and Runoff• Vapour returns to the Earth as __________, ___________ or ______________• Water falling on land and melting snow move across the surface (____________) and
enter ________________ of water• If this doesn’t occur it will enter the ___________ and ______________________ instead
The Carbon Cycle• All living things contain ___________________.• Carbon is found in the ___________________ and ________________ in the
________________ as carbon dioxide (________)• Carbon, from the atmosphere, is used by ________________ to make carbohydrates
through the process of ________________• Carbon is _________________ to the environment through the process of
_____________ _________________.• ________________ can release the ________________ found in ______________
organisms and _________________ through cellular respiration as well.
• Carbon dioxide can dissolve in water to form carbonic acid, which can be used by water plants as a source of carbon.
Carbon Deposits• Most of the earth’s carbon is stored
in ____________ __________ ______________
• ____________ ______________ are the most valuable carbon deposits
• It is also stored in _______________ from millions of years of dead marine organisms
• Carbon ____________ are contained in plant tissues and _____________ in oceans
Human Activities and the Carbon Cycle• Humans ____________ the concentration of carbon dioxide in the atmosphere through
_________________ fossil fuels• This causes _______________ _________________ and alters average temperatures
disrupting ecosystems• _________________________ reduces the amount of photosynthesis needed for
absorption of carbon dioxide
The Nitrogen Cycle• The atmosphere is composed of 78% nitrogen gas,
______ but plants cannot use nitrogen in this form, it must be supplied in other forms:
• _____________ ion (NH4+)
• _____________ ion (NO3-)
Making Nitrogen Useable________________ ___________________
• The process of converting N2 gas into usable sources, such as ammonium (NH4+)
• This accomplished by _____________ or ________________.• Without ______________, movement of nitrogen would almost STOP completely!
________________ ___________________: • The process of converting _____________ (NO3
-) back into ____________ gas (N2)