If a chemical pesticide is present in an ecosystem, which of the following organisms would likely have the greatest concentration of it in their system?
Rabbit |
Flower |
Frog |
Falcon |
Millipede |
falcons. Falcons occupies the highest place in tropic level. The effect of chemical pesticide goes higher when the tropic level goes up. It is because of bio magnification. It is the process by which pollutant or pesticide increases its concentration in the tissues of organisms as it travels higher the food chain.
If a chemical pesticide is present in an ecosystem, which of the following organisms would likely...
Of the following which is FALSE regarding decomposers in an ecosystem? A. They cycle energy into the system by converting molecules back into usable forms for other organisms in the ecosystem. B. They are critical to an ecosystem functioning; ecosystems require producers and decomposers at a minimum. C. They cycle nutrients in the form of usable biomass and productivity back into the ecosystem. D. They are critical to an ecosystem functioning because they convert unusable biomass back into a usable...
Which organisms would likely be the most difficult to kill? A. endospore B. staphylococci C. streptococci Burning fossil fuels and deforestation have resulted in an increase in the concentration of _________ in the atmosphere, which may be causing the global climate to change. A. O3 B. DDT C. CO2 D. NO2 In a food chain, which organisms are in the first trophic level, supporting all of the other levels? A. producers B. primary consumers C. secondary consumers D. tertiary consumers...
Which of the following would most likely fit the following chemical scheme? More than one answer may be correct. XY(aq)=x*(aq) + (aq) Sodium chloride Acetic acid Hydrobromic acid Hydrofluoric acid Methanol None of these
2. which of the following is a functional ecosystem boundary that would be best suited for effectively managing an ecosystem? A) boundary indicating the area contained within fire Island national seashore B) boundary between New York State and Connecticut C) boundary around Garden city D) coastline surrounding the Long Island sound E) international border between the United States and Canada
Which of the following would most likely fit the following chemical scheme? More than one answer may be correct. XY(aq) ⇌ X+(aq) + Y–(aq) Sodium chloride Acetic acid Hydrobromic acid Hydrofluoric acid Methanol None of these
Which of the following features is NOT a typical characteristic of a degraded ecosystem? a. dominance by small, short-lived species b. simplicity in structure and function c. low rates of productivity d. rapid rate of decomposition Which of the following is a key characteristic of chemicals that bioconcentrate? a. highly abundant in the ambient environment b. organochlorines c. of low molecular weight d.fat soluble Which of the following characteristics is fundamental to a resilient ecosystem? a. the ability to return...
7) Which of the following species is present in the greatest concentration in a 0.100 M H SO, solution in H,O? a. HO 6HSO RHSO d so,2 All species are in equilibrium and therefore have the same concentration
re most likely to survive and the average weight 14) Which of the following is an example of stabilizing selection? A) The birth weight at which newborn humans are most likely to survive and of newborn humans are about the same. B) There is an increase in antibiotic resistant strains of bacteria C) There is an increase in the number of different breeds of dog. D) Garter snakes with different coloration patterns behave differently when threatened. 15) Which of the...
diagram indicate the a. return of chemical substances to the environment b. order of importance of the various organisms c. direction in which organisms move in the environment d. the flow of energy from heterotrophs to autotrophs e. direction of energy flow through a series of organisms 17. The diagram represents a food chain. The arrows in the serious threat to many forested areas. Which would probably be the most ecologically sound method of gypsy moth control? a. increased application...
Question 17 1 pts Which of the following is present in the greatest concentration in a 0.1 MH2SO4 solution in H2O Note: Ka2 = 0.02 for H2SO4 HSO4 and H30* (same highest concentration) H2SO4 H30 HSO4 502-