A) agree that global climate change is not a very serious and urgent problem. B) agree that scientists have been mistaken in their interpretations of the severity of climate change. C) agree that global climate change is a very serious and urgent problem. D) disagree as to whether greenhouse gasses contribute to climate change. E) disagree as to the future of the coal industry.
At the global level, the biggest environmental problem we currently face concerns
A) multicropping different crops in a single agricultural plot B) diseases attacking domesticated fowl and mammals C) increasing population growth among developing countries D) climate change E) so-called "environmentally friendly" but destructive technological approaches to meeting food demands
According to the text, the game changer for our ancestors, whether they were australopiths or early Homo, was
A) their first rudimentary attempts at language. B) their first rudimentary attempts at technological solutions to problems. C) their ability to manage their own lives. D) their capabilities to expand into new habitats. E) their bipedal locomotion.