Question
Which is a possible result of red tides?
Algae feed off of nutrients from the colder layers of ocean waters.
Warmer water temperatures encourage the algae to grow.
Algae produce toxins that pass from one organism to another.
Nitrogen and phosphorus enter lakes and ponds from runoffs.
Algae feed off of nutrients from the colder layers of ocean waters.
Warmer water temperatures encourage the algae to grow.
Algae produce toxins that pass from one organism to another.
Nitrogen and phosphorus enter lakes and ponds from runoffs.
Answers
Answer
If sources of nutrients that cause eutrophication are reduced or eliminated, then _____.
algal blooms form in lakes and rivers
bacteria use up the oxygen in the water
eutrophication slows to its natural rate
algae produce toxins that are eaten by fish
Answer
The most common cause of algal blooms is _____ in the water.
an increase in nutrients
a decrease in temperature
a decrease in oxygen
an increase in nutrients
a decrease in temperature
a decrease in oxygen
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