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It's still unclear about whether star's comments went viral, PETA announced they were launching an investigation to see if any laws were broken.
Their chloroplasts contain chlorophylls a and b, which gives them their green color.
The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
The resulting radiocarbon combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire in a sample from a dead plant or animal such as a piece of wood or a fragment of bone provides information that can be used to calculate when the animal or plant died.
Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.
The term is today generally limited to the green plants, which form an unranked clade Viridiplantae (Latin for "green plants").