suzy.co.nz

You don’t have gills - you have lungs instead. Your lungs are full of lots of small blood vessels that small particles of gases to be exchanged in a gas mixture. Your lungs aren’t able to collec...

Facts Grass contains a mixture of ingredients that get recombined inside a cow to make a new mixture that we call milk. To get the nutrients from the grass the cow first has to swallow the grass, w...

Facts Rust happens when things made from iron get left lying around in damp conditions and the iron gets reddish brown flakes on it. Rust happens when iron water and oxygen mix together. It’s call...