cExams.net
Do You Know
Questions & Answers on General Knowledge.

Question:
How did the first reptiles evolve on Earth?
Answer:
About 300 million years ago, amphibians evolved into reptiles. These reptiles continued to adapt to their environment. They developed a better way of breathing than amphibians – amphibians breathe by moving their throat muscles, but the dinosaurs moved the muscles below the rib cage and abdomen, just like us. As a result, they could take in more air.
--- >>>
More Questions:
  • What does the inside of a microwave oven look like? Please show illustrations.
  • Why and how does water conduct electricity?
  • How does one find out the speed of a quark? Is it 7000 times the speed of light?
  • Why do people get married?
  • If microwave cookers are so energy-efficient, why can't similar machines be used as hot water heaters or in central heating systems?
  • Where are tapirs found?
  • Why are candies on sticks called lollypops?
  • How does the picture get to the TV itself? How does a radio wave make a picture?
  • What types of climate are found in South America?
  • What makes an airplane fly?
  • How did the centre of the song publishing industry become known as “Tin Pan Alley”?
  • Why can ice, water and steam co-exist at "triple point"?
  • Is moment of inertia determined only by mass, as inertia is in translational motion?
  • How does an astronaut get prepared for the long period of antigravity that he is going to be put on?
  • Why do children demand “trick or treat” during Halloween?
  • How crowded is Australia?
  • Why does criss-cross mean back and forth?
  • How are the paints made that artists (like Rembrandt and Monet) used in the past?
  • Can we live on mountains?
  • How does suntan lotion work to prevent ultraviolet rays from damaging your skin?
  • How does a steam heating system work?
  • When did the first cycle roll?
  • What are icequakes?
  • Why is 21 June an important day around the Arctic Circle?
  • Can canines run fast?
  • How to Clean Jewelry
  • Galileo Galilei
  • Grandparents Day Celebration
  • Benefits of Peas
  • Xmas For Kids
  • Benefits of Bamboo Shoots

  • Chourishi Systems