Problem: A couple of people are canoing in a river. They use paddles to move through the water. the moves

Answer: are explained as they go.

Problem: How to breed neon tetras
Set up a breeding tank.
You will need more than one tank in order to breed tetras, so get another one if you do not have one already. You can use a 12 x 8 x 8 inch (30 x 20 x 20 cm) tank to breed your tetras.

Answer: You will use this tank to bring a male and female tetra together for breeding and also as a place incubate the eggs and baby tetras. You can set this tank up similar to how you have your normal tank set up.

Problem: How to fireproof a bedroom
Install a smoke alarm in the bedroom.
The smoke alarm should be located in an easily accessible location, so that you can practice proper maintenance. You need to replace the batteries on the smoke detector every six months.
Answer: Since smoke alarm sensitivity reduces with age, you should replace the alarm periodically. You should not use a smoke alarm that is older than ten years.