In recent years, scientists have examined sources of data to determine if human activities have influenced global climate change. Scientists have collected data on the extent of Arctic sea ice between 1980 and 2009 shown in the graph. What information from the graph could scientists use to strengthen their argument about the relationship between recent human activities and climate change?

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .