I would say its the first option. Hope this helped.
Its called the exchange reaction
if this help then make this the brainiest answer
Answer:
D. Theory
Explanation:
The term scientific theory indicates the well supported statement, which explain the working of any phenomenon.
Prokaryotes do not have a nucleus or any organelles. They are a single cell organism, such as bacteria and archaea
<span>Digestive enzymes of diverse specificities and are found in the saliva secreted by the salivary glands, in the secretions of cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the secretions of cells lining the small and large intestines.</span>