What is protease?
a. a catalyst
b. a product
c. a reactant
d. an inhibitor

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: