Do You Know
Questions & Answers on General Knowledge.
Why do people have to die?
All living things must die. It is a part—the final part—of the biological cycle of life. A flowering plant, for instance, springs from a seed, grows, blossoms, produces seeds for the next season, fades, and dies. Similarly, an animal is born, grows and matures, reproduces, ages, and dies. Old plants and animals must make way for new plants and animals, through which the cycle of life can continue. If plants and animals did not die, eventually there would not be enough food, water, or space in the world for life to flourish. Even dead plants and animals contribute to the cycle of life, for their remains enrich the soil for the next generation of living things. New generations of plants and animals are needed to ensure the survival of life on our planet. The world’s environment is constantly changing, and new plants and animals—with unique characteristics resulting from the combined genetic contributions of their parents—may be better equipped to survive under the evolving conditions. This process of change and improved survival, which has taken place gradually over millions of years (ever since life began), is called evolution. Just like all plants and other animals, people also experience this biological cycle of life. A person is born, grows into physical maturity during adolescence, experiences adulthood, ages, and then dies. At death, the cycle of life is completed as that individual makes way for following generations.
When did people start living in Europe?
How can a balloon support the air around it (pressure wise) and still rise?
What is the brain?
When was Rome founded?
How did Britain govern such a large territory around the world?
What are house rules and family contracts for Internet use?
Are the terms "gnat’s eye" and "hair’s breadth" true units of measure?
What is a mammal?
What is skin?
Why are vain people said to be “looking for the limelight”?
What is heat?
Which plants drown bugs?
How do circuits work, what are they made of, and who came up with the concept?
What is Brewster's angle?
How can we clean the microwave oven?
Is magnetic flux another name for magnetic field?
Why do people in flash pictures have "red eye"? How do cameras try to solve that problem?
When a device uses two batteries, why do they have to be place positive to negative? Are there any exceptions?
Why does my voice sound different to me when I listen to a recording of myself?
What are earthquake zones?
How did sunglasses originate?
What do the stars and stripes on the United States flag mean?
Is it possible to sense when a person touches a car, even if the car is painted?
How does a cassette tape recorder work?
What makes ducks different from other waterfowl?
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