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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Look at the food web above to answer the following questions.
1. Which organisms are the producers in this food web?
2. Which organism is an example of a primary consumer?
3. Which organism is an example of a tertiary consumer?
THINK ABOUT IT- Look at the food web below and answer the questions.
FIGURE 6.3 Food webs: (a) a typical terrestrial food web.
Roman numerals identify trophic levels.
Oak
trea
Cak
acons [
Simple
chemical
compounds
(phosphates,
nitrates, etc.)
Red-tailed
hawk
][1
L
Mause
Bacteria
Sun
l][
Golden-crowned
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Decomposers
[]]
Salamander
Fungi
Pine
bore
I]
Pine
[
no explanation needed only letters
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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- Which trophic level(s) must be present to sustain any ecosystem?a. producers onlyb. producers and consumersc. producers, detritivores, and decomposersd. producers, consumers, detritivores, and decomposersarrow_forwardPlease do this fast and please tell only the answerarrow_forwardFood chains are typically short in the tundrabecause primary production is lower than in mostother ecosystems.arrow_forward
- The diagram below represents recycling of nutrients in a certain ecosystem. Sunlight. I Secondary Consumer Producer. Q. Dead organism III. II Mineral salts and hunts a.Name the trophic level represented by Q b.Name the process represented by: I II III c.Name the organism involved in process II d.What would happen within the ecosystem if all the secondary consumer were eliminated?arrow_forwardThe number of trophic levels in an ecosystyem are limited.Comment.arrow_forwardOrganisms at a higher trophic level have less energy available.comment.arrow_forward
- All organisms at the top trophic level_______ . a. capture energy from a nonliving source b. obtain carbon from a nonliving source c. would be at the top of an energy pyramid d. all of the abovearrow_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
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