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I think the correct answer is b sorry if wrong
This is a physics question, not biology, but...
f=1/T where f is frequency and T is the period.
f= 1/(1/3)=3
frequency =3 Hz
Answer:
Which data help hydrologists predict floods?
Impermeable land area
Snowpack
Explanation:
Impermeable land area
, Snowpack
The above factors are very essential to an hydrologist to predict floods though other factors such as topography, drainage among others are also inclusive to make the prediction rightly.
The answer is C I believe
