 Billions
and billions of microbes are crawling, squirming, and squiggling
all over your body right now! But don't worry. Nearly 95 percent
of all microbes are harmless. Some of the other 5 percent can
make you sick, so remember to wash your hands often. Without
these invisible companions, life as we know it would not exist.
Animals, including humans, could not digest their food. Plants
would not grow. Garbage would not decay. In short, the planet
would be a real mess. Luckily, microbes won't disappear from
earth anytime soon. These hardy creatures have existed for more
than 3.5 billion years. They are the smallest and most diverse
life form known. In terms of numbers, microbes rule! |
It's a Small World