Look at the events in your Sorting Tool activity and at the Geologic Time Scale diagram from the article. In what period did the first fish appear?

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

i think that c)gold was found there

but i am not sure

multiply it by 5 in order for you to understand i cant give an exact answer.