Answer:
A cell is made up of several molecules working together; a tissue is made up of many cells, working together; and an organ is made up of several tissues working together.
Explanation:
Answer:
B. refraction
Explanation: hope this helps!
Answer:
Because animals cannot produce energy directly from the sun, they must eat plants or other animals that eat plants, and acquire energy, either directly or indirectly, from glucose
Explanation:
Remember that the number of electrons are equal to the number of protons, and to find the number of protons you have to look and see the atomic mass of the atom is equal to the number of protons, and to find the number of neutrons you have too subtract the atomic mass to the atomic number.
Example:
You want to find out how many protons, neutrons, and electrons are in Platinum:
- Atomic number is equal to the number of protons:

- So platinum has 78 protons and electrons.
- Subtract atomic mass to atomic number:
(forgetting about the decimals)
So platinum has "78 protons, and electrons, and has 117 neutrons."
Hope this helps!