ANIMALS

ANIMALS:

The animals are living beens with unic caracteristics:
* multicelular
* nervous system and brain
* most mobiles
* most ingest nutrients, having a mouth and anus

Invertebrates: Invertebretes are the animals that do not have eskeleton.  


Moluscs: clam
Arthopods:insect
Echinoderms:star fish
Porifera: sponges
Cnidaria:jellyfish
Annelida:earthworms

Vertebrates:

There are differents types of animals:reptiles, mammals,fishes, amphibia and birds .

AMPHIBIANS:The amphibians live in land and water,they have a cold environment and they breth of lungs.                       Example:frog and salamander     

REPTILES:They born by eggs and they have scale                  Example:cocodrile and snake
BIRDS:They have feathers and wings and they put eggs          Example:sparrow
MAMMALS:they have lungs to breth and they have a hot environment    Example:lion and humans
FISHES:They have scales and they breth by gills                      Example:shark and fish


Vertebrates can be classified in :

VIVIPAROUS:The viviparous are the animals that are born of their mother

oviparous: The oviparous are the animals  they born by eggs






ovoviviparous:They produce eggs but they deliver baby animals










Cold blood vertebrates  can not warm thensellf using food        Example:lizard and frog
Warm blood vertebrates can warm thensellf using food              Example:elephant and humans





                                                      FUN FACTS

Today about 98% of all living animals are invertebrates

Probably more than 99.9% of old species of animals are extint