Wednesday, February 13, 2013

How does a frog make such a low sound for its size?

A male frog makes a low pitched sound when it is trying to attract a female frog in the spring.

How does a frog make such a low sound for its size?

What is a VPN?


VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).

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