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DEFINITION: (adjective) Plentiful; copious. SYNONYMS: lush, riotous, luxuriant, exuberant. USAGE: He wiped his forehead, which had broken out in profuse perspiration at the thought of the pain which he might have to inflict upon the poor soul.

The unusually large, spherical Moeraki Boulders that dot a stretch of Koekohe Beach in New Zealand have been the subject of attention since prehistoric times. They range in size from .5 to 2.2 m (1.5 to 6.7 ft) in diameter and are composed of mud, fine-silt, and clay, and are cemented by calcite. Centuries of coastal erosion have exhumed these septarian concretions from the mudstone enclosing them. How many millions of years did it take for the larger Moeraki Boulders to form?

Cockroaches are gregarious insects; they tend to group together with others of their species. Generally, they prefer darker shelters and settle together in a single area. Using a cockroach pheromone coating, European scientists were able to introduce robotsinto the cockroach community, and the machines were then able to lead the cockroaches to seek shelter in lighter areas. Ultimately, these mechanical cockroaches may be utilized in pest control or serve as the blueprint for larger robots that could be used to herd livestock.