How long does it take for the Earth to rotate around it's axis?

Which one is a producer?

What provides humans with the energy that they need to survive?

If a boy kicks a ball, what will make the ball come back down?

What does a stem do for the plant?

Which state of matter has a definite volume, but does not have a definite shape?

Which one of the following is a good conductor of electricity?

Which animal is known as the ship of the desert?

Which of these is an omnivore?

How many bones are there in the human body?

What will happen if you put a plant in a closed carton for a longer time?

What is the process of food making in plants?

Which planet is closest to the Sun?

Which is the largest country in the world?