Answer:
Most of the heavy metals on earth came from outer space from supernovas
This occurs when stars die
Explanation:
Visit Ted-Ed on You Tube
Type in the origins of gold and take notes
Happy to help
Explanation:
A.They filter waste and extra water from blood so they can create urine, which is removed from the body.
There are more potassium ions inside the neuron than outside.
With fossils, scientists can use carbon dating to determine the approximate age of whatever fossil they have.
<span>The water diffuses out of the cell to equalize the solute concentrations
Salt is too big to pass through the cell and water is the only so water tries to "balance" the concentration on the inside and outside.
</span>
