
Which is colder: The North or South Pole?
Both of Earth's poles are cold, but which has more ice and wins the prize for "coldest" pole?
Reference Visible light is a type of electromagnetic radiation between the infrared and ultraviolet wavelengths, and it can be detected by cells in the human eye.
Reference The Mariana Trench is more than 7 miles (11 kilometers) deep. Although it is a toxic environment, some creatures of the deep thrive there.