Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
The saliva has enzymes that start to break down food using the lock and key system.The teeth chews the food and begins mechanical break down of food
Answer:
D
Explanation:
it mostly occurs quarterly
Well considering birds follow humane rules, their selection and environment around them being thriving could effect their songs in a positive way. While a bird with a low selection of environmental stuff around them would effect their songs in a bad way giving off a more down manner.
How far is the moon from earth
238,900 mi
