12. a football match is being played at night in a stadium with flood lights on. you can see the shadow of a football kept at the ground but cannot see its shadow when it is kicked high in the air. explain.

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

If a || b and e || f, what is the value of y ?

What mass of glucose is produced when 54g of water react with carbon dioxide