look at the events in your sorting tool activity and at the geologic time scale diagram from the article. in what period did the fish appear?

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.

Choose the factors that influence the climate of the u.s. northeast. distance from the equator proximity to large urban areas elevation secluded area distance from a large body of water

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things