The jagged, sharp, and angular blocks that form the surface of some basalt flows is called ________________
Fill in the blank(s) with correct word
aa
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Speed divergence is
A) most common with anticyclones. B) straight-line acceleration of upper-level winds. C) the spreading out of upper-level winds. D) primarily a fair-weather phenomenon. E) primarily a surface-level phenomenon.
A 10-Hz wave has a period of
A. 100 s. B. 10 s. C. 0.1 s. D. none of the above
A pheromone is a ________
A) strong herbicide B) species-specific chemical attractant C) chemical that travels in the bloodstream and controls an organism's growth and development D) predator used to manage a pest naturally E) new form of chemical insecticide waiting FDA approval
If a column of air is heated, it will:
A) have a lower pressure at its base. B) become more dense. C) have a smaller vertical pressure gradient. D) contract.