posted by Anonymous .
what is the difference between the -s at the tropics and the -s at the end of needs
"Tropics" can be either singular or plural. The word refers to a specific part of the world.
"Needs" is a plural form of "need."
Look these words up here:
Since "tropics" is a noun, the -s makes it plural.
The word "needs" can be both a noun and a verb. As a verb, the -s shows that it is singular.
He needs a cup of coffee.
They all need coffee.