Do You Know
Questions & Answers on General Knowledge.

What is lichen?
Thought to be among the oldest living things on Earth, lichen is a unique growth that is made up of a fungus and either green algae or bacteria called cyanobacteria. The algae or bacteria live underneath the sheltering fungus, and provide it with sugars (food) from photosynthesis. In return, they receive protection from the sunlight and are able to live without drying out. In this way, lichen represents one of the most unique living "partnerships" on Earth. Lichen is a hardy plant that grows on all kinds of bare surfaces in extreme environments, such as rocks, tree trunks, desert sand, cleared soil, and living bark. Most kinds grow very slowly—often less than 1 millimeter per year.
--- >>>
More Questions:
  • What is an allowance?
  • How did wire recorders work?
  • What is an orbit?
  • How does the liver work?
  • Are there plant species that are endangered?
  • Do birds of prey have special wings?
  • What did the ancient Greeks do for fun?
  • What is the largest insect on Earth?
  • Where do songbirds live?
  • How do faults produce earthquakes?
  • How can the magnets be manipulated in such a way that they can do this moving of the electron beam in such an incredibly small amount of time?
  • Why is an innocent person who takes the blame for others called a “scapegoat”?
  • Which was the oldest Mesopotamian civilization?
  • What is cyberbullying?
  • What was the Civil War?
  • Who discovered Uranus?
  • How does an electric welder work?
  • Which is the most famous sauropod?
  • How can I make 1000 nanometer light waves visible to the human eye?
  • Can a host be harmed?
  • What kind of tape recorders are the best: cassette recorders or the ones with bigger spools?
  • Where can you find orangutans?
  • How do sound proof and bulletproof glasses work?
  • Which plant is used to make linen?
  • When was the wristwatch invented?
  • Body Surface Area (BSA)
  • How Friendly Are You?
  • Daily Health Tips
  • Macronutrient Calculator
  • Vocabulary Examination
  • Birds

  • Chourishi Systems