If a sound gets louder, the of its vibrations increases. options:
amplitude
pitch
waves

I think Amplitude

Explanation:

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it