Lecture 4_fillin version

Lecture 4_fillin version - most behave like one of these 5...

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most behave like one of these 5 representative examples xcept _____________ forms gas driven by ____________. cept assimilation involve ___________. Lecture 4: Biogeochemical Cycles We are going to look at the BGC’s of: 1. Carbon (C) 2. Nitrogen (N) 3. Phosphorus (P) 4. Sulfur (S) 5. Water (H 2 0) Why study the movement (recycling) of elements between Earth systems? 1. To answer biological, geological, atmospheric and hydrological questions about elements that affect abundance and growth, or that may be toxic What ________ chemical element might be present in a reservoir? o Example : Frog skin is an ________ system, chemicals pass easily through it. Malformed frogs growing multiple legs indicate the presence of some chemical element that is disturbing growth What problems occur when an element is too abundant in a reservoir? o Example: When treated sewage was dumped into Lake Washington, it introduced a lot of ___________ into the lake. This led to a rapid growth of algae (called algal bloom) o Abundant ____________ caused Lake Washington to be covered with a slimy, foul-smelling coat of algae that took up a lot of oxygen from the water causing other organisms to die o This problem was fixed by redirecting the treated sewage to the sound where
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Lecture 4_fillin version - most behave like one of these 5...

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