What processes were occurring when this photograph was taken or at some time in the recent past?
A. ejection of the outer envelope of gas and plasma
B. nuclear fusion and nucleosynthesis of helium, convection in the interior, emission of electromagnetic radiation and heat
C. nuclear fusion, gravitational attraction of material, and movement and rotation of a galaxy
D. attraction of mass by gravity, formation of stars via nuclear fusion, and emission of electromagnetic radiation
Answer: A
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Intensive subsistence agriculture
A) is used primarily in parts of the world with small populations. B) involves more human labor than swidden agriculture. C) usually achieves only low productivity. D) is most commonly practiced in areas with little rainfall. E) relies on chickens and geese as draft animals.
The layered appearance of foliated metamorphic rocks is due to the
A. realignment of minerals so that they are perpendicular to compressive forces. B. mechanics of weathering minerals. C. laying down of minerals, layer upon layer. D. recrystallization of minerals.
The ocean zone that makes up less than 10% of the world's ocean area, yet contains 90% of all the marine species, is the ____.
A. abyssal zone B. bathyal zone C. benthic zone D. coastal zone E. littoral zone
Define bioaccumulation and biomagnification
What will be an ideal response?