Why are materials attached to magnets A. They become permanent magnets when they are in a magnetic field

B. They are temporary magnets whether or not they are in a magnetic field

C. they are also attractive to earths magnetic field, which is always present

D. They become temporary magnets they are in a magnetic field

PLEASE HELP

D. They become temporary magnets when they are in a magnetic field

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answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: