life science the skill of life

LIFE SCIENCE THE SKILL OF LIFE

BIODIVERSITY,BIOMES AND ECOSYSTEM:CLASSIFICATION AND

BIODIVERSITY

BIODIVERSITY AND CLASSIFICATION

• Biodiversity refers to the total number of species found in an area.

• Includes the large variety of species, different ecosystems and genetic differences.

• Endangered species: species in danger of

extinction• Threatened species: species likely to become

endangered in the near future

BIODIVERSITY

ENDANGERED ANIMALS THREATEDNED ANIMALS • BLACK BEAR

• BALD EAGLE

• SNOW LEOPARD

• SNAIL

BIODIVESITY

INDIGENOUS • ARE THOSE SPECIES THAT OCCURS NATURAL

IN MANY DIFFERENT AREAS IN THE WORLD. NATIVE IN MANY PLACE THEY ARE SPREAD AROUND E.G SNAIL, LIONS AND MONKEYS

ENDEMIC SPECIES• ARE THOSE ORGANISMS THAT OCCURS

NATURAL IN CERTAIN PLACES CANNOT BE FOUND AROUND THE WORLD E.G MADAGASCAR FLYING FOX AND EAGLE

BIOSPHERE AND BIOMES• DIFFERENT TYPES OF BIOSPHERE ARE LITHOSPHERE,ATMOSPHERE AND HYDROSPHEREUNDER ATMOSPHERE WE FOUND IMPORTANT GASES • NITROGEN 78%• OXYGEN 21%• CARBONDIOXIDE 0,03%

LITHOSPHERE IS THE LANDMASSES E.G SOIL ROCKS

HYDROSPHEREHYDROSPHERE SUPPORT ALL ORGANISMS THAT CAN BE FOUND ON LAND AND OCEAN CURRENT. IT ENSURE THE CONDITION OF CLIMATE.

HISTORY OF LIFE ON EARTH

• WE HAVE SCIENTIST THAT HELP TO FIND THE HISTROY OF EARTH THEY ARE CALLED GEOLOGIST PALAEONTOLOGIST

METHOD USED TO FIND FOSSILS

• PALAEONTOLOGIST FIND FOSSILS WHEN ANIMALS DIES IN A WATERY INVIRONMENT LIVING HARD BONE AND SHELLS BEHIND

• BURIED IN MUD AND SLITS • SOFT TISSUES QUICKLY DECAY • ENCASED BONES DECAY ALLOWING MINERALS TO SEEP IN REPLACING ORGANIC MATERIALS BY A PROCESS

CALLED PERIFICATION