This Sunday is the first Sunday of advent!!!!!!

                   MERRY CHRISTMAS!!!!!!

CALL ME MAYBE

i´m recomended this song.

This song is the best song of the world

Merry christmas!!!!

400!!!!!!

In the blog of diverscience we enter 400 persons!!!!!!!!!
Is fantastic!!!!!!
Thank you for enter in DIVER SCIENCE
CONGRATULATIONS!!!!!

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GO TO www.englishpitingli.blogspot.com is very funny  their blog is for english.


                                       VISIT THEM !!!!!!        

VERTEBRATES

Vertebrates are the group of animals that have a spinal column and skeleton.

Vertebrates is divided in 5 groups: fish,birds,reptiles,amphibians and mammals.

Fish are the largest group of  vertebrates.They live in water.Fish live in salt water, rivers, lakes or oceans.Most fish lay eggs.Fish take oxigen of  water through their gills.Fish have fins and a tail,with them swim..Their body is covered with scales,with protect them.

 Birds live on land and have 2 wings., bird´s body is covered with feathers.Birds do not have teeth: they have a beak. Some birds can swim; their feet are specially.Birds are oviparus.

Reptiles breathe through their lungs.All reptiles have thick, hard scales covering their body.Some reptiles have 4 short legs.they move to one place to another by crawling.Other reptilesdo not have any legs.They move by slithering.

Amphibians live part of their life in water, and part of the land.When they are young live in water and breath through their skin and gills.When they become adults they live on land and breathe through their lungs. An amphibian`s skin is moist.They have 4 legs.Amphibians are oviparus.When their are babies look different from their parents.As they grow,their body changes, these changes are cold metamorphosis.

invertebrates

Invertebrates is the group of animals that not have spinal column, and skeleton.
Invertebrates is divided in 6 groups: arthropods, molluscs, worms, echinoderms,sponges
and cnidarians.
Arthopods are divided in: insects, arachnids, crustaceans and myriapods.
Their body is divided in three main parts:  head, thorax and abdomen.
Molluscs are divided into gastropods bivales and cephalopods.
Molluscs do not have y legs.To move to one place to another,they use  a muscular foot.
Wormsdo not have legs, their bodies are long and soft.they are not protected by exoskeletons or shells.Their body divided into rings.
Echinoderms have a definite shape  whith hardsplates under their skin.Their can move from one place to another on hundres of small feet.
Cnidarians they live mostlyin the sea and have tentacles.
Sponges live in the water. There are a lot  of holes, called pores,in their body.

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