Many people with cancer like to get mail because it shows that someone is going out of their way to support them. Sending a card does not put the person with cancer under any pressure to respond in person, but gets the simple message of 'Thinking of you' across to them. Keep in mind that you probably don't know the person's exact situation so it might be better to error on the side of neutrality.
Best Answer: According to a scientist at the Forest Reserve District in Illinois, The life span of an average adult housefly is from 20-30 days, and may even survive freezing weather if it stays indoors.
The housefly life cycle closely mirrors that of most insects: a basic cycle that begins with an egg, then develops through a larva phase, a pupa phase, and finally, into an adult. During a warm summer -- optimal conditions for a housefly -- the cycle, from fertilized egg to adult, spans a mere seven to 10 days. new adult housefly has, at most, three months to reproduce before it dies. With so many predators, a housefly's average lifespan is even shorter: 21 days. Luckily for the housefly, the phrase breeding like flies isn't just a figure of speech.