Reading & Use of English: Part 3
Word
formation and vocabulary (8 questions)
ACTIVITY
188:Read the text below.
Use the word given in capitals
to form a word (a noun, adjective or
adverb) that fits in the gap in the same line.
Then check the correct
answers.
Bird migration
Migration is the perilous seasonal journey undertaken by many
bird species.
In the northern hemisphere it is prompted by the
of food.
SCARCE
Migrants are also
programmed to respond to the changing
GENE
length of
the day as autumn approaches. Nevertheless, in the tropics,
where there is
little variation in the amount of daylight, migration is still
a
surprisingly common
.
OCCUR
Many birds will display considerable restlessness before
beginning their
journeys. Their
to the earth's magnetic field helps them
SENSE
navigate,
but inexperienced birds may get things
wrong
SPECTACLE
and end up far
from
their intended destination.
In the past, the return dates could be predicted with great
precision but
climate
change makes this harder. Although it is
for birds to
ADVANTAGE
return earlier
than their rivals so they can establish territories, getting
back
too early could have consequences for their
long-term survival. However,
some
birds are
reducing the distances they migrate in response
PROGRESS
to
milder climates. Their adaptability in such a short period in
