Knowledge Tree
Relations (1)
cross_type 2.81 — strongly supporting 5 facts
Oxygen is a fundamental chemical component of life on Earth [1], [2], [3] and plays a critical role in atmospheric and geological processes on the planet [4], [5], while also serving as a benchmark for comparing potential alternative biological systems [6].
Facts (5)
Sources
Carbon may not be the only basis for life. Look for silicon, too bigthink.com 3 facts
claimCarbon is the basis of organic chemistry on Earth because of its versatility in forming complex, stable molecules with itself, hydrogen, oxygen, and nitrogen.
claimElemental silicon is unsuitable for life on Earth because it oxidizes into silicates when exposed to atmospheric oxygen or liquid water.
claimCarbon is essential for life on Earth because of its versatility in forming complex, stable molecules with itself and other elements like hydrogen, oxygen, and nitrogen.
Beyond Carbon-Based Life: Exploring Alternative Biochemistries in ... walshmedicalmedia.com 1 fact
claimSulfur-based life could potentially use sulfur compounds for respiration instead of the oxygen used by carbon-based life on Earth.
Alien life may not be carbon-based, new study suggests | Space space.com 1 fact
claimLife on Earth is based on organic compounds composed of carbon, often including hydrogen, oxygen, nitrogen, phosphorus, and sulfur.