Question

are microorganism present everywhere ?

Answer 1

Microorganisms are present almost everywhere as they are ubiquitous on Earth and their diversity and abundance are determined by the biogeographical habitat they occupy.

Microorganisms living just about everywhere: in the soil, water and air; in animals, plants, rocks and even us!

Your body is home to trillions of microbes. Run your tongue over your teeth you're licking thousands of microbes that normally live on your teeth. Millions of them live on your tongue, too. A large part of "you" (that is, the mass of your body) is actually something else: bacteria, viruses and fungi.

Microbes have been around for billions of years because they are able to adapt to the ever-changing environment. They can find a home anywhere and some of them live in places where we once thought NOTHING could survive.

For example, scientists have discovered microbes living in the boiling waters of hot springs in Yellowstone National Park. These microbes "eat" hydrogen gas and sulfur and "breathe" hydrogen sulfide (a gas that smells like rotten eggs). So they are present almost everywhere in this world.