Discuss how a specific genetically modified organism might provide a benefit for humans and at the same time pose a threat to a population or ecosystem.

Genetically modified food are a very controversial issue. On the one hand, we can make a lot of food in a small area, which is great for our expanding population. At the same time, genetically modified foods are creating “super-weed” since we can modify foods to resist weed growth, there are new strains of weeds that are resistant. Also, some genetically modified foods can lack nutrients, and not to mention they do not have to be labeled. You could be eating a genetically modified food right now.

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.