Gorillas are considered to be very intelligent animals. They are known for their use of tools and their varied communication. Some gorillas in captivity at a zoo have been taught to use sign language.

Iguanas can stay under water for up to thirty minutes.

Tiny dust particles surround a comet. They are swept into a long tail by the solar wind, which consists of subatomic particles speeding from the sum at speed of hundred of miles per second.

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