you can find your favourite chocolate no matter where your m

you can find your favourite chocolate no matter where your mum hides it的全文

You can find your favorite chocolate no matter where your mum hides it.You then think yoursense of smell is pretty good?Sorry,what you should know is that peoplesmell in black and white,while most animals smell in color.Some animalscan tell smells that people don’t even know are there.
Have you eevery little spot in a yard?It’s “reading” smells — almost like people read the newspaper.A dog can find lots of information from even tiny traces ofsmells.
Other animals may use their super sense of smell to talk with each other.Many kinds of animals make chemicals called pheromones(信息素).These chemicals send smell-messagesto other animals ofthe same kind.
One smell may send a warning.Another smell may help attract a mate.Honey bees do lots of smell-talking all day long — about where the best flowers are,where the worst trouble is,and more.They make at least 36 different pheromones!Insteadof talking with words,they talk with smells.
To see how another kind of pheromone works,imagine this:An ant wanders alone through a field in search of food.Allof a sudden,it came across an old sandwich.It grabs a crumb.Then it heads back toward its anthill to let the other ants knowabout the find.Along the way,the ant wipes its abdomen(腹部) on theground.This leavesa small chemical trail(痕迹).
The other ants willsniff and follow it to the tasty prize after they have been told by the returning ant that “Food is over there!” with a chemical smell.
So with a sniff,wildlife can have some wild conversations!ver seen a dog sniffing