How do you think a chemist might use a chemical reactions to create something like a synthetic?

Who is better, messi or cristiano, i need this for a chemistry class. asap

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Enzymes affect the reactions in living cells by changing the