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By measuring the amount of original and transformed atoms in an object, scientists can determine the age of that object.
Cosmic rays: Invisible, high-energy particles that constantly bombard Earth from all directions in space.
When carbon-14 falls to Earth, it is absorbed by plants.
These plants are eaten by animals who, in turn, are eaten by even larger animals.
One benefit is that there is a chat feature available since the slideshow is presented online.
The limits are also important to understand while using Google Presenter.
Half-life: Measurement of the time it takes for one-half of a radioactive substance to decay.
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