frequency
A seismometer would measure earthquakes, but there is no such activity on the moon to measure.
iIDK
pH is a measure of the hydrogen ion (H+) activity in a solution.
It is useful to measure the effects of human activity so that we can see if they are making the situation worse, over time. If we can see that human activity is damaging the environment, then we can, if we are sensible, do something about it.
a microphone is the best answer to that!!
The measure of how often you perform an activity is the frequency.
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webmail
A seismometer would measure earthquakes, but there is no such activity on the moon to measure.
The primary measure it looks at is the real GDP, which it considers to be the single best measure of aggregate economic activity.
iIDK
Muscle fatigue
Behavior explains a manner in which a person will perform an activity or a certain way in which a person thinks of a situation Action is an activity performed by a person in a way he wants to perform it.
The electrical activity of the heart.
Before Cardiovascular activity
breathing blood pumping brain activity stomach activity kidney and liver activity
pH is a measure of the hydrogen ion (H+) activity in a solution.