I would say the microscope....................
There are 4 fundamental states of matter: solid, liquid, gas and plasma. Energy is the ability to cause change or do work. Some forms of energy include light, heat, chemical, nuclear, electrical energy and mechanical energy.
The answer is pancreas and intestinal gland. The pancreas mainly secrete amylase, to digest carbohydrates, lipase, to digest fat, and protease, to digest protein. And the intestinal gland mainly secrete carbohydrase, to digest Maltose to glucose, and protease.
