Answer:
Circulatory system
Explanation:
Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
-Kahn Academy
Answer:
A. true
Explanation:
greenhouse effect is when gases trap heat in the atmosphere causing the temperature to rise
The only true answer here is B. if you have a periodic table, you can see that Magnesium atomic number is 12 while Aluminium's is 13. this means Al has 1 more proton and weights more than magnesium since proton and neutrons contribute to the weights of the atoms.
It occurs in the Mitochondria
Lipids tend to form fatty acids.
