GREAT MIGRATION

interval

periods of time between events

inherited instinct

natural behavior passed from parents

prolonged

lasting for a long time

zigzaggy

moving in many turns

temptation

things make you want to stop or change

undeterred

not stopped by problems or fear

voraciously

eating a lot and quickly

handout

food or money given for free

instinctive

natural, not learned 

pronghorn

an animal that looks like a deer (linh dương sừng chạc)

hatch

for eggs break and produce a baby

zooplankton

tiny animals floating in water

aphid

small insects that eat plant sap

intricate 

very complex

wildebeest

a large African animal like a cow

detrimental

causing harm