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Desert Animals

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Title: Deserts Author: Laptops For Teachers Last modified by: hcl Created Date: 10/3/2006 9:29:33 PM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Title: Desert Animals


1
Desert Animals
2
What is a desert?
  • The desert is a land of extremes extreme heat
    and extreme dryness sudden flash floods and cold
    nights. Because deserts are such a difficult
    places to live in they often have names likes
    "Death Valley," "the empty quarter," and "the
    place from where there is no return."

3
How dry is a desert?
  • Deserts are usually very, very dry. Even the
    wettest deserts get less than ten inches of rain
    a year.
  • In most places, rain falls steadily throughout
    the year. But in the desert, there may be only a
    few periods of rains per year with a lot of time
    between rains. When it does rain, there may be
    quite a downpour! After the rain, desert flower
    bloom

4
Is it always hot in a desert?
  • Everyone knows that during the day many deserts
    are hot, very hot. Temperatures can get as high
    as 100 degrees fahrenheit are not uncommon. Yet
    at night, the same deserts can have temperatures
    fall into the 40s or 50s? With no clouds or plant
    life to keep the heat in, it begins to cool as
    soon as the sun goes down.

5
Types of desert
  • Believe it or not, deserts come in two varieties
    hot and cold.

The Antarctic is actually the Earths largest
desert. The main form of precipitation in a cold
desert is snow -- but only ten inches or less per
year.
The Sahara is the largest hot desert. These are
covered in sand and rock.
6
Can any plants grow in a desert?
  • Deserts are the home to many living things.
  • Plants that grow in a desert have to be
    especially adapted to the dry conditions. They
    must be able to collect and store water  and
    reduce water loss.
  • Desert plants look quite different to plant that
    grow in other places.

7
Which animals live in the desert?
  • Animals in the desert must survive the intense
    heat, searing sun, and lack of water.  Animals
    that live in the hot desert have many
    adaptations. Some animals never drink, but get
    their water from seeds (some can contain up to
    50 water) and plants. Many animals are
    nocturnal, sleeping during the hot day and only
    coming out at night to eat and hunt. Some animals
    rarely spend any time above ground.

8
Desert Animals
  • There are many animals in the desert.
  • They can survive by eating other animals or by
    eating plants that store water.
  • To protect them from the hot sun, they stay in
    the shade or in their shelter.
  • Animals may build their shelters inside plants.
  • Some animals sleep during the day and are active
    at night.
  • Some animals have hard shells to protect them
    from losing much water.
  • More animals live in hot deserts than in cold
    deserts.

9
Anteater
Camel
Roadrunner
Gila monster (lizard)
Scorpion
10
Camels
  • Camels are well suited to survive the conditions
    of the desert. The hump in their back stores fat
    they store water in the lining of their
    stomachs. Camels have extra long eyelashes to
    keep the sand out of their eyes, and big flat
    feet to help them walk through the sand.

11
Some of the animals that live in the desert.
A sidewinder is a small agile snake. It is mainly
nocturnal and takes shelters from the heat of the
day in the burrow of another animal or under a
bush.
The fat sand rat overcomes the problem of the
unpredictability of desert food supplies by
laying down a thick layer of fat all over its
body when there is plenty of food It then lives
off this fat when food is short. Active day and
night, this gerbil darts about collecting seeds
which it carries back to its burrow. 
12
Red Kangaroo
  • Like many desert animals, red kangaroos prefer to
    sleep in the day, when the desert is at its
    hottest, and wake up at nighttime, when it is
    actually very cold. That explains why many
    animals have fur, even in hot deserts.

13
Desert Lark
  • The desert larks feathers are a light brown
    color, which means that it is well camouflaged in
    the desert sand.
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