16. Coordinate Conjunctions
such as and and but are placed next to
the words and ideas they connect. Use a
coordinating conjunction when you want to
give equal emphasis to two main clauses.
The pattern for coordination looks like this:
main clause + coordinating
main clause + coordinating
conjunction + main clause.
conjunction + main clause.
17. Subordinate Conjunctions
are used when one idea in a sentence is
dependent upon another idea. The
subordinate conjunction is used to connect
the dependent with the main thought.
Subordination, however, emphasizes the
idea in the main clause more than the one in
the subordinate clause. Generally, the
patterns look like these
main clause +
main clause +
subordinate clause.
subordinate clause.
18.
19. Frogs and toads, common name
for amphibians that make up the
order Anura (or Salientia). The
order is usually divided into 22
families, based primarily
on skeleton and teeth. The
differences
between frogs and toads are
mainly
superficial, with the name frog
20. areas where the differences
between frogs and
toads are even harder to determine,
and some
species qualify as either. Anurans
range in
size from 12 mm (0.5 in) to nearly
300 mm (nearly 1 ft) in length.
Typical
adults are tailless, with long,
powerful
hind limbs that enable them to hop
or
21. down to a slit when exposed to
bright light.
All anurans have skin glands
that secrete
irritating toxins for defense
against
predators. Most anurans,
especially
males, are quite vocal. As the
animal
forces air from the lungs, vocal
22. substance, making
it and efficient trap for prey. It also
produces mucus to
help in swallowing. Although they
cannot chew, most
anurans have teeth, which are used
to
grasp prey. All frogs and toads
blink
when they swallow. Since no bone
exists between the eye and the
mouth,
23. Frogs and toads live in a variety of
habitats, but most prefer moist
regions. Although they breathe air
through lungs, many can stay
underwater for long periods,
absorbing
oxygen in the water through the
skin. Tree frogs
are adapted for tree livings; other
anurans
are permanently aquatic; still
24. In colder regions, the animal
burrows in mud to hibernate;
some, such as Australian frogs,
estivate – lie in a state of
torpor - after burying
themselves in
sand or clay. Most anurans lay
their eggs in
water, where they hatch into
tadpoles,
25. and the adult emerges from the
water onto land. Frogs and
toads are carnivorous, feeding
principally on insects,
worms, spiders, and other
invertebrates.
Aquatic frogs sometimes ear
other frogs,
tadpoles, and small fish.
Larger
anurans eat prey as large as
26.
27.
28.
29. - are amphibians - have a heart
- bulging eyes - have a bra
- have teeth in top jaws - stron
long legs
- hatch from eggs - have a
backbone
- slimy, smooth skin - are cold-
blooded
- the young live in water - can swim
burrow
30. - paratoid glands behind eyes -
have a brain
- have a heart - lay eggs
in clusters
- are amphibians - have a
backbone
- dry, water skin - bulging
eyes
31.
32. are
amphibian
-- paratoid
paratoid
s
glands
glands
have a behind eyes
behind eyes
backbone
have teeth in top jaws a
have -- lay eggs in
lay eggs in
strong, long legs
brain clusters
clusters
-- dry, water
dry, water
hatch from eggs have a
heart skin
skin
-- stubby
stubby
slimy, smooth skin bulging
bodies with
bodies with
eyes short hind
short hind
the young live in watercold-
are legs
legs
blooded -- have no
have no
36. Exa
Exa
mpl
mpl
e
e
Frog has got strong
Frog has got strong
and long legs. It has
and long legs. It has
smooth skin but toad has
smooth skin but toad has
dry skin………….
dry skin………….
…………………………………
…………………………………
……………
……………
…………………………………
…………………………………