We will consider reducing thermal coal output or selling stakes in thermal coal mines.

Some plants are carnivores, gaining nutrients by eating various small insects and spiders. A well known example of a carnivorous plant is the Venus Flytrap.

Metals are strong and are useful for making tools, buildings, bridges and other structures where strength is important.

While aluminum is the most common metal found in the Earth's crust, the most common metal found on Earth is iron, mostly because it makes up such a large part of the Earth's core.