Study the following statements about ozone and state if the statement is true or false:
It is used to disinfect water.

Study the following statements about ozone and state if it is true or false: It absorbs ultraviolet rays.

Study the following statements about ozone and state if it is true or false: Its proportion in air is about3%.

Study the following statements about ozone and state if its true or false : It is essential for breathing of living organisms.

Identify the type of ''Or'' used in the following statements and check whether the statements are true or false: A rectangle is a quadrilateral or a 5-sided polygon.

Which of the following statement is true about wate hyacinth ?