Answer:
the middle and bottom left
Explanation:
one is a positively charged atom, and the other is normal. they are both the same
Answer: you can protect earth’s resources by reducing, reusing, and recycling you can also you can plant a tree!
Explanation:
If you don’t reuse or recycle our planet will be covers in plastic, by planting trees you can help the environment grow
amount of time the two substances are in contact. area in contact between the two substances. specific heat of the material that makes up the substances. the density of the two substances in contact.