Hello again, I helped you with your geothermal question earlier.
I would believe that B would be correct, because if you decrease energy use, then you would use less energy when performing tasks.
Answer:
Water
Explanation:
water molecule contains one oxygen covalently bound to two hydrogen atoms with no carbon present.
The atomic number of an isotope is the number of protons it contains, whereas the mass number is the total mass of the nucleus, which is the combined number of protons and neutrons in the nucleus. To find the number of neutrons, you must therefore subtract the atomic number of the isotope from the mass number of the isotope.
<span>In the above example, the atomic number is 8 and the mass number is 18. This isotope is known as O18. The number of neutrons in the isotope is: Mass number - Atomic number = Number of neutrons
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Should be A. Species have changed over time.
