Lesson 5 Exam Question 12.5 / 2.5 pointsWhat can paleoecologists utilize to assess which tree species existed in an area? Question options:Climate modelsSoil typesDNA from current treesAncient pollen Question 2 2.5 / 2.5 points Food webs are typically arranged into trophic levels with: Question 32.5 / 2.5 pointsAs glaciers in North America melted, formerly glaciated areas were invaded by:
Question 4 2.5 / 2.5 points Which statement BEST describes a keystone species? Question 52.5 / 2.5 pointsIn succession, which type of environmental change occurs when the physical environment changes, such as an increase in temperature or salinity? Question options:AllopatricAllogenicAutozygousAutogenic Question 6 2.5 / 2.5 points The greater the number of links in a food chain, the higher the: Question 7 2.5 / 2.5 points
The number of species within a community is usually greatest when: Question 8 2.5 / 2.5 points
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- Fall '14