Compare and contrast the patterns of life in the Paleozoic Era to the Mesozoic Era. What are the major differences between these two eras? Are there similarities or similar trends?
What will be an ideal response?
In the Palaeozoic life was concentrated in the seas, it came up on land for the Mesozoic.
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Scientific hypotheses differ from scientific theories in that they are
a. widely accepted descriptions of what we find happening over and over in nature b. tentative explanations that need further evaluation c. not subject to proper investigation and testing d. arrived at after extensive mathematical modeling e. tentative explanations that need further evaluation and not subject to proper investigation and testing
The most serious seismic hazard is:
a. ground failure b. mass movement c. tsunamis d. ground shaking
What type of atmospheric conditions does a looping smoke plume like the one shown above indicate?
A. stable B. conditionally stable C. conditionally neutral D. unstable
International trade policies involving food have to make sure that
A) developing nations are not undersold or discouraged from increasing their food productivity. B) developed nations make a significant profit on their international food sales. C) developing nations set the terms of trade agreements. D) only sustainably produced food enters the international market.