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When we breathe we inhale oxygen from the air into our lungs. The alveoli are tiny air sacs in the lung where oxygen diffuses into the blood via small blood vessels, known as capillaries. The blood in the...

Root hair cells have a very large surface area due to them being very long and having hair like projections. This allows more active transport of mineral ions to take place so the plant is able to take in...

When blood glucose levels drop too low it is detected by hypothalamus. The release of insulin by the pancreas is stopped so no more glucose is converted to glycogen. Instead glycogen, which is stored in t...

When dealing with with mixed fraction operations, the first step is always to change the mixed fraction into a top heavy fraction. Then consider weather the question is a multiplication, divsion, addition...

The simple definition of context is the background information surrounding a subject. When studying a literary text, context can apply to either historical context: what was taking place around the time a...