And Answers | Psle 2012 Science Questions

(a) Producer. (b) Grasshopper population will increase initially because there are no frogs to eat them.

A cactus has a thick, fleshy stem and no leaves, only spines. psle 2012 science questions and answers

(a) What is this rapid growth of algae called? (b) Explain how this affects fish in the river. (a) Producer

B) Frying an egg Explanation: Frying an egg causes denaturation of proteins – a new substance is formed, irreversible. fleshy stem and no leaves

A student looks at a pencil in a glass of water. The pencil appears broken at the water surface.