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All
amphibians are vertebrates, and they need moist environments or water to
survive.
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They
are cold-blooded.
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They
absorb water and breathe through their thin skin.
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They
have at least one special skin gland used for defense.
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Most
follow the life cycle of egg-larva-adult.
Examples:
frogs
newts
salamanders
toads
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Birds
are a type of warm-blooded vertebrate that are adapted to fly.
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Not
all birds can fly, but they do all have wings.
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Birds
have beaks that help them catch and swallow food.
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The
digestive system of a bird allows it to eat whenever it can and digest the food
later.
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Birds
lay eggs to reproduce.
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They
are endothermic, meaning they maintain their own constant body temperature.
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They
are bipedal, which means they have two legs.
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They
have hollow bones and their bodies are covered in feathers.
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Birds
belong to the class called Aves.
Examples:
parrots
penguins
pigeons
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Fish
are also vertebrates, and they are considered the oldest-known vertebrates.
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They
are ectothermic, or cold-blooded, which means they rely on their surroundings
to regulate their body temperature.
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Fish
have fins.
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Most,
but not all, fish have bodies covered in scales and breathe through gills.
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Fish
live under water.
Examples:
salmon
seahorses
sharks
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Mammals
are another type of vertebrate that belong to the class Mammalia.
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Young
mammals get nourishment from milk produced by their mothers.
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Most
mammals have hair.
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Their
jaw is hinged directly to their skull unlike all other vertebrates.
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Almost
all mammals give birth to live babies.
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They
are endothermic, or warm-blooded.
Examples:
elephants
whales
humans
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Reptiles
are thought to be the first vertebrates to live completely on land. But, not
all reptiles live only on land today.
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They
are cold-blooded, or ectothermic.
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They
lay eggs to reproduce.
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They
have four legs or descended from animals with four legs.
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They
breathe through lungs
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Their
bodies are covered in scales or scutes.
Examples:
crocodiles
snakes
turtles
lizards
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Approximately
95% of all animals are invertebrates. Invertebrates do not have a backbone.
There are different types of invertebrates, but they all share a few
characteristics.
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They
are made up of many cells that work together, or multicellular.
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Most,
but not all, have tissues, cells that work together in a more complex way.
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Most,
but not all, can move.
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There
are over 35 phyla of invertebrates.
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They
generally have soft bodies.
There are eight
phyla of invertebrates that are alive today.
ππ‘π‘πππππ - have a
segmented body and primitive brain
ππ₯π§ππ₯π’π£π’ππ - have jointed
appendages and an exoskeleton
ππ‘ππππ₯ππ - have tissues
and an incomplete digestive system
πππππ‘π’πππ₯π ππ§π - have some type
of spiny structure on their outside
π π’πππ¨π¦ππ - generally have
soft bodies and a hard exoskeleton
π‘ππ ππ§π’ππ - unsegmented
with worm-shaped bodies
π£πππ§π¬ππππ ππ‘π§πππ¦ - soft,
ribbon-like worms with no respiratory system
π£π’πππππ₯π - multicellular
organisms living in water with no organs or tissues
Examples:
snails
spiders
leeches
squid
starfish
earthworms
insects