The Andromeda Galaxy (M31) can be described as
Ans:
a spiral collection of stars, dust, and gas
2 million ly away
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The global conveyer belt transports juvenile organisms, mixes nutrients, and distributes gases and
solids. Indicate whether the statement is true or false.
Emerging shortages of water for drinking and irrigation in many parts of the world is one of the major environmental problems the world will face during this century.
Answer the following statement true (T) or false (F)
Which silicate mineral has a single-chain structure?
a. pyroxene b. muscovite c. hornblende d. plagioclase feldspar
On the deep seafloor, organisms are widely distributed ________
A) because they have eaten most of their near neighbors B) to avoid predators C) because it is too cold to move and reproduction is slow D) because there is little variation and no photosynthesis