ddddre1470
03/28/2022
Biology
High School
answered • expert verified
Beavers, large members of the rodent family in North America, are often referred to as "ecosystem/keystone engineers" by wildlife managers. Ecosystem engineers are described as animals that create, alter, or destroy a habitat. Beavers contribute to river ecosystems by bringing down old and dead trees along riverbanks. They use these trees to make their dams. Although these dams are primarily used for protection and food storage, scientists report that these dams change the surrounding environment in different ways. Given this information, in three to five sentences, describe a potential benefit that beavers contribute to the ecosystem as keystone engineers and describe a plausible impact that the removal of beavers could have on the surrounding ecosystem. (4 points)
One important benefit that beavers contribute to the ecosystem as keystone engineers is the creation of wetlands. Beavers' dams slow down the flow of water and allow sediment to settle, creating areas of still water that provide a habitat for aquatic plants, insects, and fish. Wetlands also absorb excess water, reducing the impact of floods and droughts. The removal of beavers could have a significant impact on the surrounding ecosystem, including the loss of wetlands and potential damage to riverbanks due to erosion. This could further impact the populations of other species that rely on these habitats.
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Some students are trying to convince their parents to let them raise backyard chickens. They want to present a logical argument on how raising your own chickens reduces food waste. In three to five sentences, construct an argument for how raising livestock yourself can help you reduce, reuse, and recycle waste.(4 points)
Raising backyard chickens can help reduce food waste in several ways. First, by having a direct source of fresh eggs, families may be less likely to buy more eggs than they will use, reducing food waste. Second, chickens can eat kitchen scraps, such as vegetable peels, reducing the amount of waste that goes into the landfill. Third, chicken manure can be composted and used in the garden, reducing the need for chemical fertilizers and completing the waste-reducing cycle. Overall, raising chickens is an eco-friendly and sustainable way to reduce, reuse, and recycle waste.
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Raising backyard chickens can significantly reduce food waste. Household food scraps that chickens can eat, such as fruit and vegetable leftovers or spoiled bread, don't need to end up in landfills, creating methane – a harmful greenhouse gas. In addition, raising chickens provides a source of natural fertilizer, which can be used to grow more food organically. Finally, by growing their own food, people can further reduce their reliance on large supermarkets' packaged, processed foods, and decrease their carbon footprint by avoiding products that have been shipped long distances.