Seagrasses grow in salty and semi-salty (brackish) shallow waters worldwide. A wide varietyof species live in and around seagrasses. Green sea turtles feed on seagrasses, while many different species of small fish, crabs, and shrimp use seagrasses for shelter. An increase in ocean pollution, in addition to overfishing, has reduced the number and type of seagrasses worldwide. In one area where the number of seagrasses has declined, scientists have decided to plant a new area of seagrass. Explain if this would have a negative or positive effect on the ecosystem. Include ideas about biodiversity, stress, and overall health of the ecosystem in your response.

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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.

Probably a behavioral adaptation