General Knowledge
The element that is responsible for uncontrollable algae growth
What is phosphorus?
A phenomenon in which the surface of a body of water is completely covered in algae blooms.
What is Eutrophication?
What are the inputs of nitrogen into aquatic ecosystems?
Rachael is a bum
True
How do these nutrients from fertilizers most often end up in aquatic ecosystems?
Surface runoff
Another name for algae
What is phytoplankton?
What are the uses of nitrogen in aquatic ecosystems?
Protein synthesis, DNA synthesis, and plant growth
Nitrogen is the main contributor to eutrophication in freshwater ecosystems
Why does photosynthesis not occur in eutrophicated waters?
Algae blooms on the surface prevent sunlight from getting through to underwater plants.
Describes how easy the water is to see through
What is Turbidity?
How is nitrogen released back into the atmosphere?
As a gas
False
DOUBLE POINTS
Why can a lack of photosynthesis lead to an ecosystem collapse?
No photosynthesis -> producers die, dissolved oxygen levels deplete -> predatory fish decrease -> prey fish increase -> large zooplankton decrease -> phytoplankton thrive
Any aquatic plant large enough to be visible to the naked eye
What is a macrophyte?
Which form of nitrogen is unusable by aquatic organisms?
Gaseous nitrogen (N2)
Only ammonium and nitrate can be used for DNA synthesis, protein synthesis, and plant growth
Positive feedback loop
Describing an environment where there is insufficient oxygen.
What is Hypoxic?
Which step of the nitrogen cycle can only occur in hypoxic conditions?
Denitrification
Denitrification can only occur in hypoxic conditions
True