B. Decomposition is the correct answer~
Great question! An element is one specific symbol. For example, Mg would be an element, N would be an element, and O would be an element. A compound is several elements that come together. Since Mg(NO3)2 is made of three separate elements (Mg, N, and O), Mg(NO3)2 is a compound.
The outside has grass and trees
To measure length scientists may use rulers, meter sticks, etc. and to measure mass they may use a balance.
Answer:
a that all you need and why you just and use a calculators and what they are for
