ANSWER:
A magnet can lose its magnetism through high temperatures (heat), in the presence of a magnetic field and through very strong blows.
Explanation:
Although it takes many years for this to happen, it is possible that magnets can lose their magnetic properties over time, including permanent magnets that, for many, cease to be permanent as they cannot resist demagnetization.
Also, magnets are vulnerable to heat or being dropped, which throws their fields out of alignment and impairs alignment. But let's see in detail the three existing common ways that magnets can lose their magnetic properties over time and these are:
• Via heat
• Through a magnetic field
• Via shock