The most recent evidence clarifying the relationship between modern humans and Neanderthals comes from analysis of
A) skeletal structure.
B) the types of tools that were made by Neanderthals.
C) Neanderthal artwork and burial rites.
D) Neanderthal mitochondrial DNA.
Answer: D
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The role of arroworms in the pelagic ecosystem is to:
a. filter feed on small plankton. b. link primary and higher consumers in the food chain. c. prevent grazers from population explosions. d. scavenge nutrition from dying animals. e. recycle nutrients from detritus.
What term denotes the range of all factors that
influence whether a species can obtain resources essential for survival and reproduction?
a. habitat b. niche c. carrying capacity d. community e. ecosystem
Which of the following is (are) a group(s) of
flowering plants? a. monocots b. eudicots c. roses d. maples e. all of these
Polyploidy:a
may be the result of more than one sperm fertilizing an egg. b. is not lethal in humans. c. may be the result of the failure of a chromosome to separate during meiosis. d. can be due to nondisjunction for a chromosome. e. is the mechanism of dosage compensation