EMES 442 Module 2 Primary Producers
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12 Terms
What is A?
Phosphates and Nitrates at the surface
What is B?
Spring Bloom
What is C?
Available sunlight
What is D?
Number of zooplankton
What percent of oxygen on Earth is generated by marine primary producers?
70%
Primary Producer
An organism capable of using the energy derived from light or a chemical substance to make an energy-rich organic compound.
Primary Consumer
An organism that consumes a primary producer
Top-Down Effect
Occurs when predators consume their prey
Bottom-Up Effect
Changes in lower trophic level exert strong effects on ecosystem
Nonconsumptive Effect
The presence of a predator causes prey species to retreat to shelter. This reaction reduces predation at the next level down in the food chain.
Primary Production
The synthesis of organic compounds from CO2 (Mainly occurs through photosynthesis)
Who carries out 90% of primary production in the ocean?
Phytoplankton
Note 
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