This document contains environment-dependent characters.

The United Nations Environment Programme is providing solutions to global environmental problems.

He believes in the geocentric theory.

Global warming is a big issue that affects all of us.

A terrestrial planet may have an environment similar to Earth.

He is an expert in geophysics.

We are planning to visit the nature reserve this weekend.

This secondary burial grave is believed to have been used by ancient people to honor the dead.

We don't need to reinvent the wheel.

He has a one-track mind, so if he fails once, he never tries the same thing again.