If a tiger and a lion were to mate, what may be a result?
A) The chance of fertility in female offspring increases.
B) Breeding barriers will not allow the mating to occur.
C) A new species forms and replication allows the population to flourish.
D) Sterile or partially sterile offspring are produced.
E) The species are genetically appropriate and contribute to the exponential growth in the population.
Answer: D
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Why are there so few ecosystems with more than four levels of consumers?
A) Biomass decreases by about 90% at each trophic level, moving upward. B) Top consumers compete with and kill each other with increasing population size. C) Consumers at these highest trophic levels typically form social groups that stop reproducing at high densities. D) Predators at the highest trophic levels simply are not intelligent enough to hunt other top predators.
In general, as a country goes through the demographic transition, it experiences a
A) rising dependency ratio that increases the demographic dividend. B) rising dependency ratio that decreases the demographic dividend. C) falling dependency ratio that increases the demographic dividend. D) falling dependency ratio that decreases the demographic dividend.
What is the major attraction of offshore banking in the Caribbean?
A) a free gift with every new account B) specialized services that are confidential and tax-exempt C) many branches, convenient locations D) personalized banking E) All of the above
Which two processes form most sinkholes?
a. solution and collapse b. carbonation and oxidation c. freeze-thaw and mass wasting d. acid mine drainage and evaporation e. hydration and hydrolysis