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
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.
Island ecosystems are extremely susceptible to invasive species.
Answer the following statement true (T) or false (F)