How do the lithosphere and asthenosphere differ?
a. The lithosphere is a cool, rigid outer shell that overlies the asthenosphere, which is softer and weaker than the lithosphere.
b. The asthenosphere is a cool, rigid outer shell that overlies the lithosphere, which is softer and weaker than the asthenosphere.
c. The lithosphere is a warm, soft outer shell that overlies the asthenosphere, which is more rigid than the lithosphere.
d. The asthenosphere is a warm, soft outer shell that overlies the lithosphere, which is more rigid than the asthenosphere.
e. The lithosphere is a warm, rigid outer shell that overlies the asthenosphere, which is softer and weaker than the lithosphere.
a. The lithosphere is a cool, rigid outer shell that overlies the asthenosphere, which is softer and weaker than the lithosphere.
a. The lithosphere is a cool, rigid outer shell that overlies the asthenosphere, which is softer and weaker than the lithosphere.
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The main categories of biomes are based on differences in component organisms' response to
A) climatic conditions, especially temperature and moisture. B) the ratio of plants to animals in the biome. C) the particular continent on which they are found. D) the density of the plants in the biome.
Zebra mussels ________
A) are presently restricted to the Great Lakes and Hudson River, but they are expected to spread rapidly in the near future B) were introduced into the United States in the early 1900s C) are native to Canada D) are an invasive exotic species that clogs water intake pipes at factories, power plants, and wastewater treatment facilities E) excrete waste that facilitates algae blooms and subsequent eutrophication of lakes
The current global human population is approximately ________
A) 1.5 million B) 7 billion C) 7 million D) 1.5 billion E) 10 billion
Where is the largest trading program for greenhouse gases, operating since 2005?
a. California b. European union c. United States d. The Netherlands e. The United Kingdom