How can you prove , show that stomach us protected from damage is being caused be secretion of its own acid ?

How can you prove that plants show phototropism?

How can you prove Osmosis through an experiment?

How is the stomach protected from the secretions of its own acids?

Write the procedure involved in the acid and leaf experiment to understand the concept "how the stomach gets protected from its own acid secretions ". Compare the observations with the changes that takes place in human digestive system.

How can you make your own stethoscope ?

How can you prove that congee contains carbohydrates ?

How can you prove that the water transport through the xylem?

How can you prove that sugar is a solid ? Give your arguments.

How can you show the plants absorb through their roots?

How does a vaccine protect us from diseases?