Science proceeds by scientific method and use of experimental method. The answer is true because following these steps will get the steps and results you need. There is nothing more to be done. The method is observe a question, make a hypothesis, test the hypothesis with controlled experiment, analyze data. reject or accept hypothesis, and form a conclusion.
When two solutions are separated by the membrane through which water can pass but starch cannot, the osmosis will occur.
Osmosis is described as the spontaneous movement of water through membrane from a region of lower solute concentration into a region of higher solute concentration. Water movement tends to equalize the solute concentrations on the two sides.
Double fertilization occurs in Angiosperms
waves travel along the surface of Earth's crust. P waves travel through the Earth's interior.