Question

easiest ever!! 15 marks!!!!!!!!!!
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Answer 1

10. combustion is a chemical reaction in which substance reacts with oxygen

Answer 2

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1. Carbohydrates formed by the condensation of 2-9 monomers are called oligosaccharides. The polymers of carbohydrates are glycogen (stored in liver and muscle) in animals. Plants store energy in the polysaccharide known as starch (amylose and amylopectin). Starch-containing plants are the universal staple foods.
2. oxygen