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.
Is it possible to live in space?
How long does Mercury take to orbit the Sun?
What's going on with the wheels when a car accelerates?
How are mountains different from plateaus?
When were the first Olympic Games held?
What is the most popular rock and roll song in history?
What is pop art?
Does Africa have major rivers?
How do plants make their food?
What was unique about the maiasaura?
How is the human body a living machine?
What does the SPF on sun screens mean?
What is a silo?
Why is going beyond the known limits called “pushing the envelope”?
Should I tell my parents I am being bullied?
What does the term 'Blue Moon'mean?
Can we make an electric fence with no physical wire?
Why do camera flashes make eyes red and why do two flashes correct this problem?
How do photoconductors work?
Is there water on the moon?
If electricity lights a bulb, does it also light my torch?
Why do we call Academy Awards “Oscars”?
Why is the paved runway of an airport called a “Tarmac”?
What are the gases that make up the Earth's atmosphere?
What is an oasis?
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Protect Your Heart
In research, resveratrol demonstrated the ability to improve the dilation of blood vessels, which may allow blood to flow more easily through blood vessels. It has also been shown to relax the walls of the blood vessels, making their diameter larger, thereby lowering blood pressure, and allowing a higher volume of blood to flow through all areas of the body, delivering increased oxygen and nutrients to the bodys cells. Another study found that just 10 mg of supplementary resveratrol resulted in a dramatic reduction in heartattack risk factors.