Answer:
is cool is cool goodcripopo
The answer is B. Enzymes.
Enzymes are biological catalysts that help cause reactions in your body.
D. Parasitism , the roundworm benefits from the relationship, but the puppy is harmed
Answer: The order with respect to
is 1.
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

k= rate constant
x = order with respect to 
y = order with respect to A
n = x+y = Total order
From trial 1:
(1)
From trial 2:
(2)
Dividing 2 by 1 :
therefore x= 1
Thus order with respect to
is 1.