Topic Details (Notes format)

What is the main function of the ozone layer?

What is the chemical name of table salt?

What is the chemical formula of methane?

What is the approximate age of the Earth?

Which planet has the strongest gravitational force?

Which organelle is known as the "powerhouse of the cell"?

Which element is the most abundant in the Earth’s crust?

What is the term for water changing from liquid to gas?

What is the primary source of energy for life on Earth?

What is the most abundant element in the universe?