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Which of the following would represent an ecosystem?
a. A lake
b. A fish tank
c. A prairie
d. all of these.
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- A limiting resource does all the following except that it (a) tends to restrict the ecological niche of a species (b) is in short supply relative to a species need for it (c) limits the presence of a species in a given community (d) results in an intermediate disturbance (e) may be limiting for only part of an organisms life cycleScience Name: Date: Class: Range of Tolerance Data Analysis One of the responsibilities of an aquatic biologist is to make sure that the abiotic factors stay wiumh the acceptable ranges for the optimal help for the Species within the local ecosystem. Bcologists, including aquatic biologists, use the range of tolerance to monitor the number of different populations residing in the area. m order to do so they use statistical models. Create a graph displaying on the x-axis the ranges of abiotic conditions such as temperature to study the population of rainbow trout in the area ( use the launch model as an example), Label each interval with temperature range and condition. What Causing Stress in Rainbow Trout Population The optimal range is the amount of an abiotic factor that produces the highest possible population. For water temperature, this would be about 6-10°C. Label this area on the graph. 1. 2. The zone of physiologic stress occurs when an abiotic factor exists at levels that are…Which trophic group keeps “leaky” carbon cycling through an ecosystema. primary producersb. detritovoresc. primary consumersd. predators40
- A student is observing a pond which includes the following: • 2 frogs • 5 ducks • Several species of deciduous trees • Several large rocks She identified these observations as a community. What is wrong with this identification? This would be a population since she is looking at different species at the pond.Space is an example of a density. O Independent / abiotic O Independent/biotic Dependent / abiotic Dependent / biotic limiting factor and is also a(n). factor.What is the difference between a community and an ecosystem? Group of answer choices a. an ecosystem includes the abiotic environment b. a community includes the abiotic environment c. they are exactly the same thing d. an ecosystem covers a larger geographic area e. a community covers a larger geographic area
- It is that change is the of the und threat from the of trees as a of change? A Desert B Tropical Rainforest Tundra C. Taiga Grassland E. In which biome would you expect to see plants adapted to fire? Choose at least one correct answer Temperate forest A. Tundra Tropical rainforest C. Grassland Desert E. In which biome would you expect to see darkly pigmented leaves and low plant growth forms Choose at least one correct answer A Taiga Tundra B. C. c) Tropical Rainforest Grassland D. Desert E.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 decomposersWhich of these would decrease the rate of evaporation in an ecosystem? a. Creation of a reservoir behind a dam Ob. An increase in wind OC Replanting a forest, decreasing soil exposure Od. An increase in global surface temperatures
- A farmer abandons a field. The natural changes that occur in the field following the abandonment are considered to be secondary succession because the ecosystem did not contain any soil. O there is already soil present in the ecosystem. a new ecosystem develops.Which of the following would BEST help conserve biodiversity. CHOOSE ONLY ONE a. Plant native trees b. Engage in aquaculture c. Backyard farmingThe comprises all living organisms on Earth, plus the environments in which they live. O a. biome O b. biosphere C. hyporheic zone O d. benthic zone
