How is our knowledge of genetics used in medicine? doctors can diagnose genetic disorders. doctors can screen for genetic disorders. scientists understand disorders such as down syndrome and turner's syndrome. all of the above

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water