Let me get this out of the way immediately: The Earth is more than 4 billion years old. Evolution is real and is the basis for all modern understanding of biology. Climate change is happening, and humans are causing it.
These fundamental scientific truths are agreed upon by the vast, overwhelming majority of scientists who study those particular fields, because of the vast, overwhelming evidence in those particular fields supporting them. It’s important that we teach this to young students, as well as how to understand what constitutes real evidence as opposed to ideological zealotry.