From carbon dioxide to oxygen For astronauts to survive in space, the resources necessary for life have to be provided. Conventional life support systems use physical and chemical processes for this purpose, and are dependent on regular resupply. However, due to the fact that astronauts cannot carr
A crucial part of solving related rates problems is picking an equation that correctly relates the quantities. We recommend making a diagram before doing that. Click here to see more videos: https://alugha.com/KhanAcademy Practice this lesson yourself on KhanAcademy.org right now: https://www.khan
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In a free market, unlimited human needs often meet providers with limited supply. In such an environment, competition is usually a positive force. It leads to a wider choice, increases the quality of the products offered and lowers their prices. If there is no competition, monopolies can emerge. And
