Rainforests are cleared up because of the following reasons:- LOGGING Cutting of trees in the rainforests by the logging companies is to obtain timber. They cut large trees like teak; mahogany for making furniture and the smaller one is used to produce the charcoal. The […]
Why does the leaning tower of Pisa lean?
The tower of Pisa is approximately 56m high having eight storeys which have different balls that sound different from each other. If we climb up to the tower we will definitely have strange experience because it is leaning at a sharp angle. The construction of […]
How to get rid of computer viruses?
WHAT IS COMPUTER VIRUS? Computer virus (vital information resource under seize) is a small piece of program that causes damage to the other program by changing their environment. Example a virus might attach itself to a program such as a spreadsheet program. Each time the […]
What are the effects of steroids?
A steroid is a synthetically produced version of male hormones, fat soluble compound, which increases body building activities. Athletes do intense physical work and they use 10 times more testosterone (male hormone) than a normal person. So to compensate with that or to improve their […]
Who invented the steam engine?
The credit for inventing the steam engine cannot be given only to a single inventor as several contributions were made centuries ago. Dating back to the first century A.D, the idea of steam engine was first conceived by a Greek scientist and mathematician called Hero […]
Why is it called good friday?
Not only by the name of “good Friday†have we called this day. In different countries it is known by different names. In Latin America, France Italy, Vietnam, Japan, Brazil, Portugal, Spain, Philippines is called as “holy Fridayâ€, “Mourning Friday†in Germany, “long Friday†in […]
How does computer keyboard work?
Like other physical components of computer such as monitor and mouse, keyboard also comes under the category of hardware devices. Working of the keys of computer keyboard can be easily understood. It works as a pen for us while using word processor. When we write […]
Why is the grass green?
Grass has green color because it has a pigment like other plants called as chlorophyll. This pigment is found in organelles (little factories) in a plant cell known as chloroplasts which is involved in the process called photosynthesis (a process by which plants make their […]
How do the kidneys work?
There are two kidneys in the human body that perform many vital functions in the body. They are bean-shaped organs that help in removing the waste materials from the body. Every day, our kidneys process 200 quarts of blood to release just 2 quarts of […]
What causes asthma?
Asthma is a breathing problem. While breathing air enters our body through nose and mouth, then reaches to the wind pipe, to the tubes known as bronchi and finally to the lungs from where the oxygen present in the air is supplied to the body […]