Which event did not occur in the Hadean (4.6-4.0 bya)?
a. formation of oceans
b. extremely bright Sun
c. formation of Moon
d. accretion of Earth
e. formation of core and mantle
b
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Why did the debris separate into two lobes at the far end of the slide?
The question is based on Figure 38-8, a digital elevation model showing the 2014 Oso, Washington, landslide along the North Fork Stillaguamish River, and color Map T-26b in the back of the Lab Manual, showing a portion of the “Mount Higgins, Washington” quadrangle (scale 1:24,000; contour interval 40 feet); this same topographic map is reproduced in black-and-white as Figure 38-14. What will be an ideal response?
If an organism's diploid cells have 40 chromosomes, then its haploid cells have
A) 80 chromosomes. B) 40 chromosomes. C) 20 chromosomes. D) none of the above
Santa Ana winds are:
A) similar to Chinooks but are caused by different dynamics. B) a cold wind found in the Yukon Territory. C) a hot, dry wind that flows off the Mexican High Plateau onto the plains of Texas. D) a cool, dry wind flowing off the Pyrenees Mountains in Spain.
Ecologists refer to the maximum sustainable population for an area as
A. lag phase. B. exponential growth. C. carrying capacity. D. None of these are correct.