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The blue whale grows to 30 meters ............ length and over 200 tons ........ weight.
in / in
Some whales are known to migrate ............. warm waters to bear their calves.
into
The jellyfish are carried ............. by the water currents.
along
Thousands of lives will be ............. stake if emergency aid does not arrive in the city soon.
at
The starfish live ........ and depend ................ the seabed.
on/on
The scientists have collected different samples to analyze .......... their experiment.
for
What can we learn ....... the satellite photos?
from
Whales and sharks are still hunted ............... food, medicine, and other products.
for
Beaches are filled ..... plastic bags, pieces of glass and cigarette butts.
with
Whales like to feed ............. the cold oceans where there is a lot of krill.
in
Summer is the season when fire is the greatest danger ................ woods and forests.
to
Campers must always remember to put .............. their campfires and cover the place ...... earth.
out/ with
We must know how important it is to care ............. our great forests and save them .............. fire.
for/ from
Hydroelectric stations provide power ................. homes and industries.
for
Trees, grass and other plant life play an important part ........... the natural circulation of water.
in
Strong winds caused serious damage ............. the roof.
to
