5th box -Flashcards

/ɪmˈperətɪv/ (n.) a priority; an urgent need Migration is an excellent example of how nature has responded to the biological imperative for species to evolve and spread out

/fiːt/ (n.) a difficult act or achievement Modern-day researchers have attempted to understand this feat.

/ɪnˈdjʊə $ ɪnˈdʊr/ (v.) to live under difficult conditions … winter season in nearby valleys, enduring some of the coldest conditions on Earth.

/briːd/ (v.) to reproduce Migration is the regular movement of animals between their breeding grounds and the areas that they inhabit during the rest of the year.