Answer:
CH4 has one carbon atom and 4 hydrogens, making a total of 5. MgO has 1 magnesium atom and 1 oxygen atom, making for a total of 2.
I think it is carbohydrates
site where the cell synthesizes new protein molecules
The answer is "B. Marsupials". Marsupials undergo relatively premature births compared to many other species, and although this puts the baby at risk, it lessens the risks for the mother.
The Answer is C Gas exchange take place in our lungs