ArcaMax

Knowledge

on Dec 27, 2025

Plants
Heart
Air
Garbage

Air. The Earth's air is comprised of 78% nitrogen, 21% oxygen and 1% other substances.

Science Trivia / December 26, 2025

Parabola. The "M" that creates the "golden arches" on a McDonald's sign is a parabola.

Science Trivia / December 26, 2025

Elevons. Elevons are aircraft control surfaces.

Science Trivia / December 25, 2025

Eye. The retina contains a series of light-sensitive cells lining the back of the eye.

Science Trivia / December 25, 2025

In The Throat. Some allergic reactions can cause the uvula to swell, cutting off the ability to breathe.

Science Trivia / December 24, 2025

Airplane Radar. The National Hurricane Center tracks hurricane activity with radar.

Science Trivia / December 24, 2025

Colder Water Sinking. Cold water is denser than warm water.