What are the very large pieces of crust and rigid upper mantle that fit together to cover earth's surface known as? subduction zones continents tectonic plates divergent boundaries

Astudy shows that an influenza vaccine is 71.4% effective in preventing a particular type of influenza. if 15,422 people receive the vaccine, how many would not be protected and would be likely to get infulenza?

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?

Khurshid is recovering from a heart attack. which type of rehabilitative care would she benefit from the most?