EARTH
It has three layers Crust: It is thin layer , it is brittle It is between 80 to 100 km thickness Mantle: It is thick layer It contains molten magma Core: It has outer and inner core The temperature is more than molten rocks . But it is in solid state due to high pressure.
Sea bed
Oceans and seasOceans are large basin of salt water Sea is a small basin of salt water
ClassificationKingdoms Monera Protista Fungia Plantia Animalia
Phylum porifera
Phylum cnidaria *cup shaped organsims. * Cnidiblasts in tentacles * Planula larva Class:Anthozoa :Coral polyp, Sea anemone Class : Hydrozoa: Portugeese man of war Class: Scyphozoa: Jelly fish
Coral polyp
Sea anemone
Jelly fish
Portugeese man of war
Phylum platihelminthes Flat ribbon like body Many are parasites Cause shistosomiasis Tape worms
Phylum Arthropoda Jointed limbs Compound eyes Carapace present. Shows moulting Class Crustacia: Crab,Lobster Goosebarnacles Class Insecta: insecta Class Arachinida: spider
