An environmental activist is someone who cares about the earth and wants to make sure it stays healthy for all living things. Just like how you take care of your own toys, environmental activists work to take care of the world we live in.
They do this by telling people about things that can harm the earth, like pollution from cars, plastic in the ocean or chemicals in the air. They also work to protect animals and their habitats, like forests and rivers.
Sometimes, environmental activists will go to protests or rallies to show their support for protecting the environment. They might also write letters to their government officials or start petitions to make sure that rules and laws are in place to protect the earth.
Being an environmental activist is great because it helps to make sure the world stays beautiful and healthy for every creature on it!