1) Social media and technology have given teenagers more ways to act negatively toward each other. 2) Teens say they believe social media has a positive impact on their lives, with some reporting that it makes them feel "depressed, less popular, less confident, and worse about themselves." 3) These teens are being bullied or are judging themselves because of what they see or experience through technology. 4) Teens should be monitored when they are online to prevent them from acting negatively toward each other. Which sentence should be revised because it presents conflicting information? Which sentence should be revised because it shows bias?

Number one is sinkholes may form from water erosion

The correct answer is c

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.