the biggest
The biggest is a superlative adjective. Follow the link to find out more.
more information: superlative adjectives
end up
finish in a situation or place after a series of events
Example: You'll end up without a job if you're always late.
For more meanings of the phrasal verb end up, follow the link below to our language library.
more information: end up
pair up
To pair up is to get together as a couple.
magnetic termite mounds
magnetic termite mound of Amitermes meridienalis
magnetic termite mound of Amitermes meridienalis
built
Here built is the past participle of the irregular verb build. Follow the link below to find out more and to listen to some examples.
more information: build
their nests
round tree nest of Nesuta termes graviolis
round tree nest of Nesuta termes graviolis
runways
the runways on the tree down which the termites travel
the runways on the tree down which the termites travel