The Koppen climate classification catalogues Earth’s types of environments. In the eyes of Koppen, they are tropical, dry, temperate, continental and polar.
In biology, we categorize life by how similar organisms are with each other. Like a family tree, we find relationships by their classification of life.
We categorize life into 3 domains of life: eukarya, archaea and bacteria. Domains classify life in the most general way such as the presence of a nucleus.
The Cambrian explosion was the largest diversification of life in Earth’s history. Ocean life started as sparse and simple. Then, it remarkably diversified.
The single-most important biochemical reaction human beings need is cellular respiration. Our cells require oxygen to break down the food and provide energy.
All living things rely on each other in the food chain. Energy transfers through living organisms from predators, herbivores, producers and decomposers.
The biosphere is the layer of Earth where life exists. You, me, plants, insects bacteria and all living things on land, air and oceans are the biosphere.
Food for thought, the nutrient cycle constantly exchanges inorganic and organic matter back and forth in the environment. It’s just recycled back and forth.
Since about 4 million years ago, humans have evolved from early hominids to modern humans. Here are 14 species examples from human evolution now extinct.
Supernovas are the dying stage of a star when the star explodes. Heavier elements like copper and zinc get flung out into space which we find in our bodies.
Endosymbiosis sparked the origin of eukaryotic cells. It’s the idea that a prokaryote engulfed a bacteria and became mitochondria part of eukaryotic cells.
By 10 to 1, colonies of bacteria outnumber human cells. We rely on bacteria because they break down sugars, help digest food and protect against infections.
The earliest anatomically modern human fossil found was dated at about 200-300,000 years old in Morocco, Africa. They had modern faces and used stone tools.
Biodiversity or “biological diversity” refers to the variety or genetic diversity of species in an ecosystem. Ecosystems rely on biodiversity for resiliency.
Carbon is re-purposed into fossil fuels in the long-term carbon cycle. The coal that we use today was produced millions of years ago from buried swamps.