How do the African buffalo and the American bison differ?

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Physics

WHAT IS A GENERATOR?»
A generator is a machine that produces electrical current by moving a wire in a magnetic ...
WILL ELECTRICALLY POWERED VEHICLES EVER BE POSSIBLE? »
Electrically powered vehicles have been in use for many years! Powering motor cars with ...
HOW DOES AN ELECTRIC LIGHT WORK? »
Inside many electric light bulbs is a wire called a filament, made of tungsten. When ...
WHAT IS THE RIGHT-HAND RULE? »
Fleming’s right-hand rule enables you to tell in which direction a current flow in a wire ...
WHAT IS THE LEFT-HAND RULE? »
Fleming’s left-hand rule enables you to use your hand to work out the direction of motion ...

Chemistry

HOW DO VACCINATIONS WORK? »
In 1796, an English doctor called Edward Jenner (1749-1823) gave the first vaccination. He ...
HOW ARE NEW DRUGS DEVELOPED? »
Research chemists examine different chemicals to find out how they react with other ...
WHAT CAUSES ILLNESS? »
Understanding the cause of an illness can often help a doctor to bring a patient back to ...
WHEN WAS ANAESTHESIA FIRST USED? »
Anaesthesia prevents pain signals from being received by the brain, so that the pain is not ...
WHAT WAS THE EARLIEST OPERATION? »
Archaeologists have found skulls, dating from at least 10,000 years ago, that have holes ...

Biology

HOW DO VACCINATIONS WORK? »
In 1796, an English doctor called Edward Jenner (1749-1823) gave the first vaccination. He ...
HOW ARE NEW DRUGS DEVELOPED? »
Research chemists examine different chemicals to find out how they react with other ...
WHAT CAUSES ILLNESS? »
Understanding the cause of an illness can often help a doctor to bring a patient back to ...
WHEN WAS ANAESTHESIA FIRST USED? »
Anaesthesia prevents pain signals from being received by the brain, so that the pain is not ...
WHAT WAS THE EARLIEST OPERATION? »
Archaeologists have found skulls, dating from at least 10,000 years ago, that have holes ...