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Science Challenge #13

Question 1. In which of the following substances is Nitrogen present?
Air, boiled water, protein, sugar.
Question 2. What is an enzyme?
a) A component of human blood that fights infection
b) A catalyst that activates chemical change.
c) A tiny inclusion in the protoplasm of every animal cell.
Question 3. There is still in existence today one type of tree that grew in the time of the dinosaurs.
What tree is it?
a) What is a “Hallux” ?
b) What is a “Pollex”?

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