Classification and Naming species

- We classify living organisms according to their shared characteristics

- Some characteristics are unique to a certain group while others are common to several groups. 

ANIMALS WITH BACKBONES ARE CALLED VERTEBRATES THEIR ARE FIVE VERTIBRATE GROUPS

- Fish: exchange oxygen and carbon dioxide across gills, and lay eggs (ovioarous) that are fertilised externally 

- Amphibians: exchange gasses through their moist, permeable skin and lay externally fertilised eggs.

- Birds: exachange gasses through their lungs and lay internally fertilised eggs.

- Reptiles: exchange gasses through their lungs and lay internally fertilised eggs. 

- Mammals give birth to live young which grow inside the body of the mother, eggs are fertilised internally. 

• Vertibrates are either cold-blooded (poikilotherms) which means that they can't control their internal body tempreture, or warm blooded (homeotherms) which means that they can 

ALL LIVING THINGS BELONG TO ONE OF 5 GROUPS CALLED KINGDOMS 

- Animalia are multicelluar; cells do not have chlorophyll or a cell walll; they feed hetrothrophically (find food from the environment)

- Plantae are multicelluar; cells have chlorophyll and a celulose…