Convection is cool things sinking and hot things rising. So for example when you have the heat on the upstairs is always hotter than downstairs because heat rises and continues to go in circles until the whole house it heated up.
Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
Answer:
The respiratory system and the circulatory.
Explanation:
The respiratory system brings in the oxygen and the circulatory system brings all of the oxygen through out the body.
Bc you should know i guess
Boy you are off the charts gorgeous, I would rate you a 69
