We consider them to be made of 3 quarks, 'uud' for the proton<span> and 'udd' for the</span>neutron<span> where 'u' is the up quark and 'd' the down quark. ... Now, </span>protons and neutrons<span> are basically found at the atomic nucleus while </span>electrons<span> form the shell of the atom, moving around the nucleus.</span>
Answer:
A. A light burned out and "opened" the circuit
Explanation:
In a parallel circuit if a light bulb goes out the rest are fine because they each have independent routes to the battery. But in a series circuit when a light bulb goes out the rest goes out because the current is going in one pathway. To tell the difference of if it closed or opened the circuit, you have to know what they mean. Closing a circuit means a complete electrical connection, the light bulbs will light and electricity will flow. Opening a circuit means the opposite. If the all the light bulbs have stopped working then the circuit is not complete, therefore it's open.
Sloths (three-toed), chameleons
Answer: This is a hard question because we need copper for just about anything. Some people say that electric cars are better because the conserve fuel, but they have copper. The source of all of our power (electricity) stems from copper. Simply said, no matter what you do to conserve copper, you are still going to need it and use it.
Explanation:
