# Physical Science

Why would a biologist want to know the pH of a lake?
What would be the expected pH value for a normal, healthy lake?
What could be a possible outcome if the lake pH was too high or too low?
What could cause a large change in a lake’s pH?

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1. Why would a biologist want to know the pH of a lake?
To determine the acidity of it (helps determine what can live in the lake)

What would be the expected pH value for a normal, healthy lake?
7 neutral or a bit acidic

What could be a possible outcome if the lake pH was too high or too low?
loss of inhabitants (fish will die insects...)

What could cause a large change in a lake’s pH?
Acid rain, chem spill

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2. Thank you so much! You're a lifesaver!!

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3. I remember these type of Qs from chem class

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