Interdependence. Interdependence is a key idea in science. As students learn about science, they begin to understand that the earth is not a group of discrete parts but a continuous environment existing over time as well as place.
In order to remove the caffeine from coffee beans, the beans are washed in a solvent (a liquid capable of dissolving substances), transferring the caffeine from bean to liquid in a process known as extraction. To extract caffeine from whole coffee beans, the following solvents can be used:
Photos.com/PhotoObjects.net/Getty Images. Naturally decaffeinated coffee may mean a variety of things. However, coffee producers do not necessarily have to disclose in what way the coffee was decaffeinated, even if it says naturally decaffeinated on the label.The most common methods of removing caffeine are the Swiss Water method, methyl chloride and ethyl acetate.n 2004 a coffee plant which naturally contains little or no caffeine was discovered by researchers in Brazil. The hope is that this plant can be crossed with already commercially popular varieties of coffee to produce beans that are decaffeinated without the need for any process to remove the caffeine.