Radioactivity in biology

Hi there, kiddo! Today we're going to talk about radioactivity in biology.

Everything around us is made up of tiny little things called atoms. These atoms can sometimes be unstable, meaning they can break apart and give off energy.

When atoms give off this energy, we call it "radioactivity". Some things, like rocks, the ground, and even ourselves, give off a little bit of radioactivity all the time, but it's not enough to hurt us.

However, sometimes we use things called "radioisotopes" in biology. These are special atoms that are made in a lab and are very radioactive. Scientists use them to study things like how our bodies are working or how diseases are spreading.

Radioisotopes can be very useful, but also very dangerous if they're not handled properly. That's why only trained scientists and technicians are allowed to work with them.

So, to sum it up, radioactivity in biology is when atoms give off energy, and sometimes we use special radioactive atoms to study things in the lab.