The answer to this question would be: enzyme
<span>Enzyme is a kind of catalyst that </span>will take part in the chemical reaction but it won't be reacted. E<span>nzyme </span>only helps by reducing the energy needed to start the reaction.
Theoretically, the enzyme is not mandatory needed but if you have an enzyme the reaction will be easier, thus increasing reaction speed. But in most case, the reaction might be too slow without enzyme, making enzyme vital in living organism.
Iron bending is just a physical change because the iron has only changed shape but there is no new substance. Iron rusting is a chemical change because there is a new substance which is rust.
Answer:
1. The graph where x axis and y axis are present is called coordinate.
4. 18
Answer:
acid: sulphuric acid (H2SO4)
base: sodium hydroxide (2NaOH)
Explanation:
D.)14 to 16 days ... at least for a fly with is an insect also
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