Name: What Is A Water Bear?
Uploaded: 2021-08-16T21:01:20.000Z
Duration: 1 min 25 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Relative clauses (Restrictive vs. nonrestrictive)

They're tiny animals that grow up to one millimeter long, and have eight legs.

Their feet look like this, more like claws.

And up close, their faces look like this.

Some speculate that there are around 900 known species.

They were given the name Tardigrada, by Italian biologist Lazarro Spallanzani.

They typically live around water and damp moss or lichens, but can be found almost everywhere on Earth.

Some theorize they might have come from space, of course, this is just a theory.

They can survive dry periods by curling into little balls.

They can hang around like that for 100 years, before casually regenerating.

They can withstand 1,000 times the lethal human dose of X-ray radiation.

In 2007, some Tardigrades hitched a ride on a space shuttle and lived outside the spacecraft in an oxygen-deprived vacuum of space for 10 days.

All of which means, it's probably impossible to kill a tardigrade.

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What Is A Water Bear?

typically

resilient

lethal

theory