1. Predict what will happen to the frog in plastic bag x after two days. Answer: The frog will die.
2. State your inference from the answer given in (1) above.
Answer: It does not have enough air to breath.
3. (i) Kept the same? (ii) Changed?
Answer: (i) food - the flies (ii) Condition of plastic bags.
4. What is the conclusion that can be made from this investigation?
Answer: Air is the basic need for animals.
