SCIENCE QUIZ Crossword

What muscle pumps blood around the body?
How many lungs does a human body have?
The bones around your chest that protect organs such as the heart are called what?
Name the Gas essential for us to breathe?
Name the layer which protects our earth from harmful rays
What is the nearest planet to the sun?
What is not found in a shark but is found in humans?
Which place is no longer a planet?
What is the chemical formula for water?
Which planet is Nicknamed the 'red planet'?
what process does the plant do to help us survive?
what is the name of the tube that carries blood TO the heart?
what makes up 80% of our brains?
What is the strongest muscle in your body?
Apart from water and oxygen, what do plants need to survive?
What part of the human skeleton protects the brain ?
What word beginning with the letter 'E' is used to power a microwave, kettle and toaster?
Who came up with the theory of evolution? Clue- Charles is his first name.