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Ashley set up the following experiment to make an electromagnet.
(a) Suggest 2 ways in which he can make the magnet stronger. [2]
(i) ________________________________________
(ii) _______________________________________
(b) What would happen if he used a copper nail instead of an iron nail? Why?
(a) State 2 characteristics of Animal C.
(i) _________________________________________
(ii) _________________________________________
(b) Write the letter, A, B, C, or D, which represents the following animals.
(i) turtle: __________________
(ii) guppy: _________________
(c) Joshua made the following statement.
Explain why the statement made by Joshua is incorrect.