View full lesson: http://ed.ted.com/lessons/why-are-there-so-many-insects-murry-gans If insects suddenly morphed into large beings and decided to wage war on us, there's no doubt that humans...
========== If insects suddenly morphed
into large beings, and decided to wage war on us, there's no doubt that humans
would lose. We'd simply be crushed
by their sheer numbers. There are an estimated 10 quintillion
individual insects on Earth. That's a one followed by 19 zeroes. So, compared with our population
of about 7 billion, these invertebrates outnumber
us by more than a billion to one. Their astounding numbers exist
at the species level, as well. There are more than 60,000
vertebrate species on the planet. But the class of insects contains
a million known species, and many others
that haven't been classified. In fact, these critters make up
approximately 75% of all animals on Earth. So, what's their secret to success? Insect abundan...