An ecologist that studies cycling of nutrients and the flow of energy between the biotic components of
an ecological community and the abiotic environments is a(n)______.
a. behavioral ecologist d. ecosystem ecologist
b. population ecologist e. organismal ecologist
c. community ecologist
D
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To what group did the earliest fossils of eukaryotes belong?
A. green algae B. red algae C. diatoms D. coccolithophorid algae E. dinoflagellates
Assuming the gardener continues to spray the herbicide for five years, do you think the weed
population will evolve?
a. Yes, there will be more individuals in the population with the herbicide-resistant allele. b. No, there will be no change in the genetic composition of the population. c. Yes, the population will have evolved because speciation will have occurred. d. No, evolution cannot occur over such a short time period.
Every experiment requires a(n) ____ as a baseline for comparison, a(n) ____ variable to test, and a(n)___ variable to measure.
a. independent (predictor), dependent (outcome), control group b. control group, dependent (outcome), independent (predictor) c. control group, independent (predictor) ,dependent (outcome) d. none of the above
Each villus contains a lacteal, which functions to:
a. absorb the products of lipid digestion. b. aid in the absorption of carbohydrates. c. aid in the absorption of water. d. secrete enzymes to aid in the absorption of fats. e. remove protein from the interstitial fluid.