Relatively few invertebrates existed at the beginning of the Mesozoic, but by the end of the Cretaceous, they were more
abundant and diversified.
a. True
b. False
True
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What does "centripetal" mean?
A) false force B) center-seeking C) inward pull D) downward push
A freight train rolls along a track with considerable momentum. If it rolls at the same speed but has twice as much mass, its momentum is
A) zero. B) doubled. C) quadrupled. D) unchanged.
Which of the following best matches the description?Accumulation of organic material that consists of or are produced by living things.
A. limiting factor B. community C. biomass D. nitrogen cycle E. nitrogen-fixing bacteria F. habitat G. herbivore H. trophic level I. interspecific competition J. denitrifying bacteria K. omnivore L. intraspecific competition M. carbon cycle N. ectoparasite O. secondary consumer P. producer
This extensive biome is dominated by evergreen needleleaf forests
A) Temperate rain forest B) Midlatitude broadleaf and mixed forest C) Tropical seasonal forest and scrub D) Boreal and montane forest