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Entries from March 2020




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"Most human beings have an almost infinite capacity for taking things for granted."

Physics

WHERE DOES ENERGY COME FROM? »
Energy is what makes things happen. Nothing can live, move and grow, or give off light, ...
WHAT ARE THE DIFFERENT KINDS OF ENERGY? »
Chemical energy is released when chemical reactions take place. It is stored in many ...
HOW DO WASP AND BEE STINGS DIFFER? »
Although both feel painful, wasp stings are alkali and bee stings are acid. That means that ...
HOW DO ACID AND ALKALI SOILS DIFFER? »
It is possible to measure the acidity or alkalinity of soil. Acid soils are usually found ...
HOW ARE ACIDS AND ALKALIS USED IN INDUSTRY? »
Many products and processes require the use of acids and alkalis. Here are just some of ...

Chemistry

WHAT ARE THE DIFFERENT KINDS OF ENERGY? »
Chemical energy is released when chemical reactions take place. It is stored in many ...
HOW DO WASP AND BEE STINGS DIFFER? »
Although both feel painful, wasp stings are alkali and bee stings are acid. That means that ...
HOW DO ACID AND ALKALI SOILS DIFFER? »
It is possible to measure the acidity or alkalinity of soil. Acid soils are usually found ...
HOW ARE ACIDS AND ALKALIS USED IN INDUSTRY? »
Many products and processes require the use of acids and alkalis. Here are just some of ...
WHICH INTERNATIONAL SYMBOLS WARN ABOUT CHEMICALS INSIDE CONTAINERS? »
International symbols warn people that the contents of containers are dangerous. ...

Biology

COULD HUMANS FIND HOMES ELSEWHERE IN THE UNIVERSE? »
As there are billions of planets in our universe, it is likely that some of them could ...
DOES THE PLANET HAVE ITS OWN RECYCLING SYSTEMS? »
The saying that there is nothing new under the Sun is strangely true. The stuff that makes ...
WHICH KINDS OF ENERGY WILL NOT RUN OUT? »
Wind, moving water and sunshine are always to be found somewhere on the Earth. All of these ...
WHAT ARE NON-RENEWABLE RESOURCES? »
Living things can grow and reproduce themselves. Given the right conditions, they can ...
HOW MUCH LONGER ARE PEOPLE LIVING NOW THAN IN THE PAST? »
In many parts of the world, life expectancy — the number of years that a person can expect ...