Look at the words before you watch the video.



Words
  • differentiate = to tell them apart
  • diversity = many different kinds of ....
  • environment = living area
  • fertilization = to make a new animal life develop
  • fin = a thin body part that a mammal uses to swim
  • grind = to press together very hard
  • howl = when animals make a long, loud sound
  • huge = very big
  • internal = inside the body
  • invertebrate = a living creature that does not have a backbone
  • limbs = arms and legs
  • maintain = keep at the same level
  • mammary = connected with the breasts
  • regurgitate = to bring food that you have already swallowed back into your mouth
  • spine = here: needle
  • store = keep, save
  • terrestrial = living on land
  • tiny = very small
  • vary = change