BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 42, Problem 3SA
Organisms at the first trophic level ________.
| a. capture energy from a nonliving source b. are eaten by organisms at lower trophic levels c. are shown at the top of an energy pyramid d. are consumers |
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Chapter 42 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 42 - In most ecosystems, producers use energy from...Ch. 42 - Prob. 2SACh. 42 - Organisms at the first trophic level ________. a....Ch. 42 - Primary productivity on land is affected by...Ch. 42 - An _______ is an autotroph. a. producer c....Ch. 42 - Most of Earths fresh water is _______. a. in lakes...Ch. 42 - Earths largest carbon reservoir is _______. a. the...Ch. 42 - Carbon is released into the atmosphere by ________...Ch. 42 - Prob. 9SACh. 42 - The ______ cycle is a sedimentary cycle. a....
Ch. 42 - Earths largest phosphorus reservoir is ________....Ch. 42 - Plants obtain ______ by taking it up from the air....Ch. 42 - Prob. 13SACh. 42 - Soil in _______ is richest in carbon. a. the...Ch. 42 - Prob. 15SACh. 42 - Marguerite has a vegetable garden in Maine....Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CTCh. 42 - Prob. 4CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The amount of energy available at the highest trophic level in an ecosystem is determined by: a. only the gross primary productivity of the ecosystem. b. only the net primary productivity of the ecosystem. c. the gross primary productivity and the standing crop biomass. d. the net primary productivity and the ecological efficiencies of herbivores. e. the net primary productivity and the ecological efficiencies at all lower trophic levels.arrow_forwardOrganisms at the lowest trophic level in a tallgrass prairie are all _______. a. two steps away from the original energy input b. autotrophs c. heterotrophs d. both a and b e. both a and carrow_forwardThe producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forward
- The total dry weight of plant material in a forest is a measure of the forests: a. gross primary productivity. b. net primary productivity. c. cellular respiration. d. standing crop biomass. e. ecological efficiency.arrow_forwardOrganisms at the lowest trophic level in a tallgrass prairie are all _______. a. two steps away from the original energy input b. autotrophs c. heterotrophs d. both a and b e. both a and carrow_forwardUnequal evaporation of seawater results in _________________________. a. droughts b. neither c. both d. floodingarrow_forward
- Increased average water temperature in Lake Erie as a result ofclimate change would most likely have what effect?a. decreased harmful algal blooms, as the higher temperatures wouldquickly kill most algae b. decreased fish populations as a result of eutrophicationc. longer algal blooms due to longer periods of warm waterd. b and ce. a, b, and carrow_forwardWhich trophic group keeps “leaky” carbon cycling through an ecosystema. primary producersb. detritovoresc. primary consumersd. predators40arrow_forwardYoung lakes are often clear and with little plant life. Such lakes arecalleda. oligotrophic.b. eutrophic.c. lotic.d. lentic.e. pelagic.arrow_forward
- In which of the following is biological magnifi cation most pronounced?a. the top organism of aquatic food chainsb. the top organism of terrestrial food chainsc. decomposersd. producerse. Both a and c are correct.arrow_forwardA salmon feeds on crabs and small fishes, which in turn feed on zooplankton that feed on phytoplankton which in turn uses up nitrates in the water. If there are overfishing of salmons, which things should decrease? a. zooplanktonb. small fishc. phytoplanktond. a and de. b and carrow_forwardWhat trophic level (i.e level 1 or 2, etc)contains the greatest biomass in most ecosystems? Explain why this occurs.arrow_forward
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