The Earth is 4.6 billion years old -- but how can humans relate to a number so colossal, and where do we fit on the geologic timeline? Comparing the Earth's lifetime to one calendar year, events like the extinction of dinosaurs and...

Check out nine abundant animals that help support the food chain in their ecosystems!

Inside our cells, each of us has a second set of genes completely separate from our 23 pairs of chromosomes. And this isn't just true for humans— it's true of every animal, plant, and fungus on Earth. This second genome belongs to our...

Explore the cell cycle with the Amoeba Sisters and an important example of when it is not controlled: cancer. Table of Contents: 00:00 Intro 1:00 Cell Growth and Cell Reproduction 1:42 Cancer (explaining uncontrolled cell growth) 3:27...

Que consta de más de una célula. <br/<br/>>

Twig - Biología

Made up of more than one cell.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...

ECU TS Shot of Phase contrast videomicrography of rotifer Lepadella ovalis (Muller, 1786), these rotifers feed on bacteria and other micro organisms and Length approximately 150 micrometers / Newcastle Emlyn, Ceredigion, United Kingdom

ECU TS Shot of Phase contrast videomicrography of rotifer Lepadella ovalis (Muller, 1786), these rotifers feed on bacteria and other micro organisms and Length approximately 150 micrometers / Newcastle Emlyn, Ceredigion, United Kingdom