Science

nutrient pollution causes algal blooms and fish kills.

question 2 options:
true
false
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question 3 (1 point) question 3 unsaved
in normal ecosystem low nutrient levels keep algae in check.

question 3 options:
true
false
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question 4 (2 points) question 4 unsaved
which of the following contributes to excess nutrients entering the bay?

question 4 options:

sewage run-off

not recycling

agricultural run-off

air pollution

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question 5 (2 points) question 5 unsaved
in order to get phase 2 to turn blue (like we saw in phase 1), did we need more or less drops of reagent d than what we used in phase 1?

question 5 options:

more

less

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question 6 (2 points) question 6 unsaved
which stage of of the experiment had the most dissolved oxygen in the water?

question 6 options:

phase 1

phase 2

phase 3