Science & TechFact

Dinosaurs aren't extinct. They're chirping outside.

Birds descend from small feathered predatory dinosaurs, the theropods, the group that also included Tyrannosaurus and Velociraptor. After the asteroid impact 66 million years ago, every dinosaur lineage died out except the birds. Biologically, birds are dinosaurs, with more than 10,000 species alive today.

Useful: The pigeon in front of you is closer to T. rex than T. rex was to Stegosaurus.

Source: en.wikipedia.org

DinosaurierEvolutionVoegel

Difficulty:

Related cards

How bacteria run evolution in a matter of days.Take an antibiotic and most bacteria die. A few happen to carry a mutation that protects them. …
Evolution wants nothing. It only sorts.A common mistake: species "develop" traits because they need them. In reality, variants arise at …
This crow builds hooks to get its lunch.New Caledonian crows bend twigs into hooks and cut serrated probes from pandanus leaves to fish …
Every one of your cells houses former bacteria.Mitochondria, the power plants of your cells, were free-living bacteria about two billion years …
Fungi are closer relatives of yours than of plants.Fungi and animals together form a group called Opisthokonta. Their last common ancestor lived after …
Oxygen was once Earth's deadliest pollutant.About 2.4 billion years ago, cyanobacteria began releasing oxygen in bulk. For most life at the …
Sharks existed before trees did.Sharks have been swimming the seas for around 400 million years. The first organism that counts as …
Goosebumps are a program for fur you don't have.Every hair has a tiny muscle attached, the arrector pili. In cold or fear it contracts and raises …

Keep reading

This card belongs to the topic Science & Tech. Every card is short, cites a source and can be saved – due ones come back by themselves later.

About Doomlearn · Projects · Legal notice · Privacy · Terms