How do you explain gaseous exchange?

How do the terms 'hypothesis' and 'theory' differ from the public and from a biologist's approach? Does cold weather affect hiv aids patients? How have the eath's physical procresses shaped the earth's landforms climate and plant life? Why electrical outlets have two holes? How do you change your font on moviestar planet? Is a rose a membrane bound nucleus? What type of research is being done on prion disease? The area of a square with sides of 2 feet is 4 square feet The area of a square with sides of 4 feet is 16 square feet What ordered pairs fit this situation? Which city is located at 48 degrees north latitude and 107 degrees east longitude? Why does light wake you up? What are the algorithms that are used to predict earthquakes by datamining? Who and what year was aluminum discovered? What is The top row of a table is called? How can prevent the accommodation in nerve stimulation? The strontium ion is isoelectronic with xenon is true or false? What is a word or concept that represents the idea of maintaining continuous life generation after generation? When did the Mahukona volcano last erupt? Is a germ smaller than an atom? What is the next step when there is more than one pathogen growing in a culture? How long can an adult giraffe's neck become?