True or False: Among the three types of ecological pyramids, the most useful is the pyramid of biomass because it shows how much kilocalories are available at each trophic level.

What if we were able to restore some critical salmon habitat, like the forests surrounding the spawning streams? To test this restoration, increase K to 40,000 fish. What would that do to the MSY value? [ Select ] Does this mean you would be able to harvest more or less fish? [ Select ]

What does the logistic growth equation describe? Multiple Choice A population that crashes after very rapid, nearly exponential growth. A population that is increasing in size, but never reaches its carrying capacity. A population that is declining in size and with further time may become extinct. A population that grows steadily the population is small and more as it approaches the carrying capacity.

What happens to populations in a food web if there is a decrease in the amount of free energy available to the producer level of an ecosystem? Explain.

What is the relationship between population density and available resources?   exponentially proportional   There is no relationship.   directly proportional   inversely proportional

Use the passage to answer the questions. Logistic Growth The carrying capacity of a population may be influenced by all except which This figure displays the equation for logistic population growth and of the following factors? visualizes population growth as a function of time (number of O A. availability of food generations) as it approaches carying capacity. N stands for population size, K stands for camrying capacity, and r stands for intrinsic rate of increase. O B. abiotic factors in the environment C. competition from other populations with similar resource requirements K= carrying capacity D. the population's intrinsic rate of increase (K-N) dN - rN dt K Number of generations rered MacBook Air 心. F7 F8 吕0 F3 F5 F6 F1 F2 $ % & * ! @ 2# 9 6 7 8 2 3 4 { P W E R T Y Q А S D F G C V B M alt ontion .... V • 元 I Population size ()

When species occupy the same niche, they must compete with each other for limited resources. Check each outcome that is likely to occur in the long-term if two species occupy the same niche. (Select all that apply): O Exclusion of one species from the entire niche, but not the other. OExclusion of both species from the entire niche. Persistence of both species throughout the entire niche. O Division of the niche into two smaller niches, each dominated by a single species. Alternating cycles where one of two species is initially excluded but subsequently becomes dominant, excluding the other.

Cities can’t ever be sustainable because they have such high concentrations of people, automobiles, business enterprises, and industries.  True  False

In a food web, the numbers of each organism typically exist in a relatively stable proportion. If an oil spill killed a large amount of zooplankton, what would be the next thing that would happen? i need help solving

In this question, why B is correct and C is wrong?   Bighorn sheep are an iconic species in the western United States, however, their population size is drastically lower than it once was historically. These sheep inhabit montane patches surrounded by urban and agricultural landscapes. Accordingly, bighorn sheep can be considered a metapopulation. Wildlife managers would like to increase the patch occupancy of bighorn sheep. Which of the following would be the most effective conservation/restoration strategy?     None of these statements is an effective conservation strategy.   Increase patch size and quality, and decrease the distance between patches.   Increase patch size and the distance between patches, and decrease patch quality.   Increase the distance between patches and patchy quality, and decrease patch size.   Decrease patch size, distance between patches, and patch quality.