COMPLETION A. Complete the paragraph with words from the box.
(r) pnine
estimate
200
length
perhaps
similar
3
4
The largest ever flying animal lived 71 million years ago. It
was a type of pterosaur with a wingspan of 12 meters. That
is the 1
of some airplanes! Recently,
a much smaller species of pterosaur was discovered in
England. Paleontologists 2
that this creature
(pictured) had a wingspan of about 75 centimeters and was
in size to a crow. It probably lived
about 124 million years ago. What caused the change in body size?
competition between these flying reptiles led
them to develop larger body sizes.