How can you revirgin?

How can compounds in diffrent types of organisms be used to benefit people? How do you use the word fortified in a sentecne? Who owns the new world? What name is given to layers of tilted rocks that are overlain by younger more flat lying rock layers? Was the first person to see the pattern in the inheritance of traits? How does standard deviation find outliers? How much is 800 meters? Is air an element mixture or compound? How many liters are there in 5 pounds sugar? When a solid changes to liquid will it gain or lose energy? What do you call the sheet that has the answers to a test? Why is it advisable to put off a non luminous flame when not in use? What does the Troposphere do? How do you know the next time you get your period? Do your farts contain carbon dioxide? How many germs are on your hand at any given time? Does water discolor red cabbage faster than vinegar and Windex? What are the three types of transmission-based precaution? What is the name for the cycles resulting from changes in Earth and movements and that may cause ice ages? How would you put maintain in a sentence?