Giant squid have been found so infrequently because
1.they’re afraid of humans.
2.deep-sea creatures as large as this are rare.
3.there are now fewer sperm whales for them to eat.
4.most deep-sea nekton are elusive and rarely surface.
4
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The development of renewable energy resources will likely
A. increase international tensions. B. increase the need for oil imports. C. decrease national security. D. cause long-term economic hardship. E. reduce harm to the environment.
Shale is metamorphosed into three rock types: (1) a banded gneissic rock; (2) a rock with small mica crystals with a shiny aspect; (3) a very shiny rock with large mica crystals; and (4) a dull slate with cleavage. Which of the following lists these rocks in order of increasing metamorphic grade?
A. 3, 2, 4, 1 B. 1, 2, 3, 4 C. 4, 3, 2, 1 D. 2, 3, 4, 1 E. 4, 2, 3, 1
Island ecosystems are extremely susceptible to invasive species.
Answer the following statement true (T) or false (F)
What is the main difference between plastics with a #2 vs, #4?
A. both are polyethylene but have different densities B. both are polystyrene and used in packaging C. both are polypropylene and easy to recycle.