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More than 70 percent of livestock population in?
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- A group of bulls (group 1) which contains 25 bulls is to graze a 5ha paddock with a pre-grazing mass of 2400kg DM/ha. They will be removed at a post-grazing mass of 2000 kg DM/ha. How may days can the group stay in the paddock?If 20J of energy is trapped at producer level the how much energy will be available to the last animal as food in food chain?About O 16% O 20% O 36% O 26% O 46% of U.S. land is used as grassland, pasture and range.
- A population grows according to the logistic model N = 55 1 + 0.9e−1.4t , where t is measured in years and N is measured in thousands. (a) What is r for this population? per year(b) What is the environmental carrying capacity K? thousand(c) This population is subject to harvesting. What is the optimum yield level? thousandWhat are the top 3 agricultural produce of Philippines for the last 2 years. Does it help agriculture sector and its impacts to environmentWhat 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 are 4 mutualistic and 4 antagonistic interaction between two or more species that are exploited to improve agricultural production or food productionWe are at a global population of 7.5 billion. Have we reached carrying capacity? Why or why not?What is often true of a population of organisms with a type IIl suvivorship curve? they produce few offspirng and invest more energy in each offspring O they produce more offspring and invest little energy in each Othey have low death rates during early life stages O they are equally likely to die at any age
- What is often true of a population of organisms with a type Il suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any ageWhy does the wolf population affect the vegetation and vice versa?American crows (species 1) compete with Turkey Vultures (species 2) for carrion. Vultures are 4x as large as crows and eat 4x as much. They also can chase Crows away from carcasses. Therefore, one additional vulture in an area displaces four crows, but it takes 10 additional crows to displace one vulture. The competition coefficients are O alpha12 (imaging the greek alpha with subsript 12) = 10, alpha21 = 4 O alpha12 = 4, alpha21 = 10 O alpha12 = 4, alpha21 = 0.1 O alpha12 0.1, alpha21 = 4
