If you have a USB microscope and projector, you can also investigate the fibres in a cotton ball and watch what happens when you add a drop of coloured water and a drop of soapy coloured water (if you ...
A very important part of your body is an organ called the lungs. Take a deep breath in and you can feel your lungs expand in your chest. Lungs help us to breathe in oxygen, then they move it into our ...
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