LUCA: Last Universal Common Ancestor
All living things originated from a common ancestor called the last universal common ancestor (LUCA). The origin of life existed before LUCA (3.5 – 4.1 bya)
Life Science
What is Net Primary Productivity for Earth?
The Earth breathes. We gauge Earth net primary productivity by how much carbon dioxide plants absorb from the atmosphere minus how much it respires.
The Dinosaur Era: When Dinosaurs Dominated
If you rewind the clock 230 million years back, dinosaurs dominated the land. Not just for a short span of time. But they lived for over 175 million years!
Carbon Dating: How Radioactive Isotopes Estimate Age
All life contains types of carbon. When an organism dies, carbon dating examines the ratio between carbon-14 (C14) and carbon-12 (C12) to estimate age.
Photosynthesis Process: Carbon Dioxide to Glucose
The main idea of photosynthesis is it takes carbon dioxide from the air. Then, it uses carbon with water to convert it into a chemical form like glucose
DNA Deoxyribonucleic Acid: The Origin of Your Genes
Your identity is decided by 4 letters of DNA (A, T, G & C). And there’s so much Deoxyribonucleic Acid in your body that it stretches all the way to the moon.
How Trees Grow from Carbon Dioxide and Water
For the most part, trees growth is from carbon dioxide and rain water. So most of the dry mass of trees is made from the contents of the air and water.
What Is the Carbon Cycle? Photosynthesis, Decomposition, Respiration and Combustion
Carbon is essential for living things and making cars move. It takes up various forms through photosynthesis, decomposition, respiration and combustion.
What Are the 4 Steps of Nitrogen Cycle?
Nitrogen transforms into several different forms in the 4 steps of the nitrogen cycle – nitrogen fixing, decomposition, nitrification & denitrification.
