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A metaphor using nature to foreshadow future events.

Lipoproteins are proteins that transport hydrophobic lipids in water based (polar) solutions such as blood. The two main types you need to know about for the IB biology course as part of option D includes...

Blood from the body enters the right atrium of the heart via the vena cava. It then travels into the right ventricle by a combination of gravity and cont...

(x - 7)^2

GPD, or Gross Domestic Product, can be defined as the total value of goods and services produced in an economy over a given period of time; specifically, GDP includes all private and public consumption, g...