Do You Know
Questions & Answers on General Knowledge.
What is the greenhouse effect?
The greenhouse effect is a natural phenomenon that helps regulate Earth’s temperature. Greenhouse gases—carbon dioxide, methane, nitrous oxide, chlorofluorocarbons— act like an insulating blanket, trapping solar energy that would otherwise escape into space. Without this natural "greenhouse effect," temperatures would be about 60 degrees Fahrenheit (15.5 degrees Celsius) lower than they are now, and life as we know it today would not be possible. However, human activities, primarily the burning of fossil fuels and clearing of forests, have enhanced the natural greenhouse effect, causing Earth’s average temperature to rise.
How do carnivorous plants digest their prey?
What causes a dropped ball to bounce?
Why do people plant marram grass on sand dunes?
Why is it important to chew food?
What is the most popular rock and roll song in history?
How can I build an AM radio?
Are there plant species that are endangered?
Why do we call midday the “noon hour”?
What kind of parents do seabirds make?
What is a magnetic field?
The earth's surface is moving at something like 950 mph as it rotates. Why don't we notice this when we are in an airplane?
How does the resonant cavity in the magnetron work?
Why do whales have holes on their heads?
Did Germany surrender after World War II?
What are the main animals found in South America?
What is the president’s job?
How does a gas turbine engine (i.e., an aircraft engine) work?
How tall can a tree grow?
How does a transistor amplify an input signal in an audio amplifier?
How would I go about making a camera that's more than just a pinhole camera?
Why is something in great shape said to be in “A1 condition”?
Why is Friday the thirteenth considered to be bad luck?
What is the approximate terminal velocity for a spent falling bullet that was fired into the air? Is this velocity sufficient to kill someone?
What is Christianity all about?
Why do we call prostitutes “hookers”?
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