How do you think the evolution of jawed fishes and other predatory creatures affected the marine
ecosystem? What will be an ideal response?
The development of predators had a major impact because organisms that had previously not needed
defense mechanisms either developed defense systems or suffered great population losses.
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Records indicating rapidly rising temperature of about 1°C since the the 1950s provides evidence for ________.
A. volcanic activity B. human-induced climate change C. natural variability of Earth's climate D. uncertainties and errors in the data
Based on precipitation, which climate type would you assign to the
western U.S.? Which climate type would you assign to the eastern U.S.? What will be an ideal response?
What is cultural imperialism? How prevalent has it been, and with what impacts?
What will be an ideal response?
Plants are important in producing soils. How do plants at the surface affect the B horizon?
What will be an ideal response?