Final answer:
It is important to keep the back door closed at all times for safety, temperature control, and to prevent insects and pests from entering the home.
Step-by-step explanation:
It is important to keep the back door closed at all times for several reasons. One reason is that closing the back door helps keep your home safe and secure by preventing unauthorized access. Another reason is that a closed door can help regulate the temperature inside your home, keeping it cooler in the summer and warmer in the winter. Additionally, keeping the back door closed can help keep insects, pests, and other unwanted creatures from entering your home.