Homework Answers
Answer: D) ecosystem engineers
Beavers are known to shape the environment in which they live. These are the ecosystem engineers of the the nature where they carry out building of dams to changing water for their own requirement. They also carry out dam building controlling the quantity as well as quality of water. The ponds as well as flooded areas would be creating habitat for different forms of animals as well as plants.
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25. Beavers act as A) dominant species B) keystone species C invasive species D) ecosystem engineers
1) In ecology, "productivity" essentially means a) the amount of energy in an ecosystem. b) the...
1) In ecology, "productivity" essentially means a) the amount of energy in an ecosystem. b) the amount of work that is accomplished. c) the amount of biomass of organisms generated over time. 2) Of the five patterns showing how species richness varies with productivity, the ________ pattern is least common. a) positive b) u-shaped c) hump-shaped d) negative e) neutral 3) When there is a hump-shaped relationship between productivity and species richness, it is because a) only a few competitively...
In the table below, name three elephant activities or functions that justify the term "keystone species"
b. In the table below, name three elephant activities or functions that justify the term "keystone species" and describe how the activity changes African ecosystems. Elephant activityChange in ecosystem c. Why have elephant populations been declining for the past several decades?
An ecosystem is: A. All members of a species that live in a geographic area B....
An ecosystem is: A. All members of a species that live in a geographic area B. All species that potentially interact with one another in a given geographic area C. All species and their nonliving environment (sunlight, soil, chemical nutrients) in a given geographic area D. All life and all of the non-living environment on the entire planet Earth.
5. The following information may be relied upon to determine whether a species should be listed...
5. The following information may be relied upon to determine whether a species should be listed as endangered or threatened under the Endangered Species Act: a. scientific data b. lobbyist efforts c. political favors d. economic impact e. the "cute" factor 6. A species that is likely to become endangered in the future is: a. an invasive species b. a nuisance species c. an extinct species d. a keystone species e. a threatened species 7. Under the Endangered Species Act,...
5. Which of the following is considered as a keystone species? Select one: O a. Wolf...
5. Which of the following is considered as a keystone species? Select one: O a. Wolf O b. Starfish O C. All of these d. Beaver
QUESTION 6 The ecological model of the relationships that form a network of complex interactions among...
QUESTION 6 The ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers is a(n): A. trophic pyramid B. dominance hierarchy C. ecosystem D. food web E. food chain 0.5 points QUESTION 7 Food webs are more stable than food chains. True False 0.5 points QUESTION 8 A keystone species is one that affects community structure in a disproportionate amount in relation to its abundance. True False...
For a species to be called 'invasive, it must 1. be introduced to a new area....
For a species to be called 'invasive, it must 1. be introduced to a new area. 2. spread rapidly in this new area. 3. eliminate native species. Select one: O a. only 2 O b. 1, 2, and 3. O c. only 3 O d. only 2 and 3. O e. only 1 Clear my choice
Which species would best act as a Lewis acid? a) BFa c) CH2CI OH O d)...
Which species would best act as a Lewis acid? a) BFa c) CH2CI OH O d) H3C CI b) . Identify the strongest acid. OH OH N c) a) OH OH d) NH2 b) Identify the strongest base. N a) c) NH2 b) d)
Which species would best act as a Lewis acid? a) BFa c) CH2CI OH O d) H3C CI b) . Identify the strongest acid. OH OH N c) a) OH OH d) NH2 b)
Identify the...
QUESTION 18 The organisms that represent all of the different interacting species within an ecosystem make...
QUESTION 18 The organisms that represent all of the different interacting species within an ecosystem make up a A. genus. B. community C. trophic level. D. biosphere. E. population Click Save and Submit to save and submit. Click Save and nurs to save all answers.
12) This photo is an example of a(n) A) ecosystem. B) biosphere. C) population. D) equilibrium...
12) This photo is an example of a(n) A) ecosystem. B) biosphere. C) population. D) equilibrium population. E) community.
5. Which of the following is considered as a keystone species? Select one: O a. Wolf O b. Starfish O C. All of these d. Beaver
For a species to be called 'invasive, it must 1. be introduced to a new area. 2. spread rapidly in this new area. 3. eliminate native species. Select one: O a. only 2 O b. 1, 2, and 3. O c. only 3 O d. only 2 and 3. O e. only 1 Clear my choice
Which species would best act as a Lewis acid? a) BFa c) CH2CI OH O d) H3C CI b) . Identify the strongest acid. OH OH N c) a) OH OH d) NH2 b) Identify the strongest base. N a) c) NH2 b) d)
Which species would best act as a Lewis acid? a) BFa c) CH2CI OH O d) H3C CI b) . Identify the strongest acid. OH OH N c) a) OH OH d) NH2 b)
Identify the...
QUESTION 18 The organisms that represent all of the different interacting species within an ecosystem make up a A. genus. B. community C. trophic level. D. biosphere. E. population Click Save and Submit to save and submit. Click Save and nurs to save all answers.
12) This photo is an example of a(n) A) ecosystem. B) biosphere. C) population. D) equilibrium population. E) community.
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