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My name is _____________________________ and I am responsible for the knowledge on this paper.
Vocabulary Practice:
Name of Trophic Level
First Trophic Level
Name of Organisms in Trophic Level (ALL)
Bacteria (Prokaryotic), Fungi (Eukaryotic), and
Nematodes
Third Trophic Level
Nematodes, Arthropods
Fifth+ Trophic Levels
1.) In three to five sentences, explain HOW the nematodes occupy more than one trophic level.
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1.) (3-5 sentences) Let’s say that, due to a surplus of nitrogen-rich fertilizers off the coast of
Mississippi, the algae in this energy web is taken over by toxic red algal blooms. Which
organisms will be affected, and in what order? Why?
2.) (3-5 sentences) Let’s say that nitrogen-rich fertilizers cause the non-toxic (safe to eat) algae to
bloom at extremely high, high numbers. Describe how this would change the food web over
time. Would the effects of this be only positive, only negative, or both at different points?
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The food chain above shows how Mercury and Methylmercury, heavy metal contaminants, affect
different species of sea life.
1.) In at least two sentences, describe how the amount of mercury changes as you move from
trophic level to trophic level. Be specific!
2.) Many doctors tell pregnant or breast-feeding women to avoid eating fish products, like canned
tuna. In (3-5) sentences, explain how these products may affect an infant’s health if a mother
consumes them.
3.) Using the food chain for support, give your best explanation as to WHY bigger fish like Albacore
and Halibut contain the highest levels of mercury?