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

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

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?

Environmental & Atmospheric Sciences