What percentage of earths surface is portable?

Is natural gas mined? Does Complementary base pairing always pairs a purine with a pyrimidine? What Conglomerates are an example of which type of rock? Does brass deteriorate? How do the structure of nucleic acids relate to their functions of information storage and protein synthesis? What does it mean when someone carries the sickle cell gene but does not have the disease? Is alcohol absorbed in the small intestine? What are the environmental effects of neon? Why does Magnesium Sulfate not have an LD50? What is a diversity independent factor in controlling a population? What are atoms mostly? How nerves can affects your speaking ability? What Minerals are in Japan? The sheath in which a hair develops is call? Will petrol kill you if you drink? Which of the following would help us in delivering the projects specific process from organizations standards process? Why are there so many earthquakes all the time? How do you make aluminum window frame? What is a ballasting? Where is the highest level of photosynthesis happening?