The half life of carbon 14 is 5730 years radiocarbon dating can not be used to estimate the age of objects up to about 50,000 or 60,000

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acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

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because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.