Answer:
It all depends what your working with and what experiment your planning on doing .
Explanation:
Say if you were working with chemicals you would the tools that would help you protect your body like gloves,googles, apron , etc
So in conclusion it depends what your doing to know what tools you are going to need
No it is an amino acid present in the synthesis of certain proteins. Elements are pure substances so an acid (which is a compound of different elements) would not be considered an element.
It's the balance of chemical equation.
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface. I think its B
Well I'm thinking that it would be both.