Study the image about geologic time. a geochronological scale measured in millions of years ago or m y a. cenozoic era: paleogene period, 66 to 23 m y a, diatrima, many types of mammals, smilodon. neogene period, 23 to 2.6 m y a, smilodon, mammoth. quaternary period, 2.6 to today, human, mammoth. during which period did humans first appear on earth? quaternary neogene paleogene cenozoic

Southeast asia relies on its many because of the volcanic, mountainous terrain. a. highways c. rivers b. airports d. lakes

What factors contribute to american farming success?

Select the correct answer from each drop-down menu. this map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shows a decrease in precipitation, and blue shows an increase. the maps differ based on the predicted levels of greenhouse gas emissions. the maps show that northern areas should get . southern areas will likely get . to use these maps to prepare for natural disasters in the great plains, scientists need to ask, ?