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like most fishes, the young are hatched from eggs which are fertilized outside
the body.
There are only three orders of amphibians, the first order being made up of
frogs and toads, the second of salamanders, and the third of relatively
unimportant forms native to the tropics.
Frogs and toads axe extremely interesting because they pass through different
stages of development during which they change from one type of creature to
another. Both frogs and toads lose their tails when they become full grown; they
are called tailless amphibians. The salamanders are lizard-like creatures with a
moist slimy skin and short legs. Most species are only few inches long.
Most of the amphibians are of little commercial importance, although the toad
and frog consume large numbers of destructive insects and the hind legs of
certain frogs are used for food and are considered a great delicacy.
II. Study the notes, consult a dictionary about the way the words are
pronounced:
creature создание, живое существо
derive получать
tail хвост
slimy слизистый, скользкий
leg нога
inch дюйм
consume потреблять, съедать
insect насекомое
III. Entitle the text, make up its model and sum it up.
Text 15
I. Read the text and state what it is about.
CROCODILIANS - ORDER CROCODILIA OR LORICATES
The crocodilians are a remnant of a group of reptiles that lived millions of years
ago. Structurally they have undergone few changes from their ancestors. They
remain in water much of the time, but frequently emerge to bask in the sun. Some
species have been known to travel overland from one body of water to another.
The skin of crocodiles is studded with heavy bony plates in addition to the smaller
scales. These plates provide considerable protection but they are not bulletproof as is
sometimes claimed. The tail is flattened from side to side and is used in swimming; it
can be swung with terrific force and hence is also an effective weapon.
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