Respuesta :
Answer:
Constraints:
Funding
Protective equipment
Research
Installation
Criteria
Fertilizers
Rationale:
This is a big deal being that fertilizers are needed to help plants experts are still looking for ways to knock down the amount used.
Which Sub-Problems does this criteria address?
The main environmental problem associated with fertilizer use is contamination of water with nitrates and phosphates. The nitrogen from fertilizers and manures are eventually converted by bacteria in the soil to nitrates. ... High nitrate levels in drinking water are considered to be dangerous to human health.
Criteria:
Human Waste
Rationale:
Human waste is a large problem and the government is trying to stop the public from disposing of it.
Which Sub-Problems does this criteria address?:
Globally, almost 80 percent of the world's wastewater flows back into the ecosystem without proper treatment. This means that almost a quarter of people drink water contaminated with human waste, according to United Nations Water. That incubates deadly diseases, including cholera, dysentery, typhoid and polio.
Criteria:
Oil
Rationale:
Oil is needed for just about everything but it is very costly when it comes to the environment.
Which Sub-Problems does this criteria address?
Oil spills have a devastating effect on the environment, ruining habitats and killing the organisms that live there by sticking to them, destroying their food sources and poisoning them. Additionally, oil hurts the economy by harming the fishing industry, as well as other trades that rely on the ocean.
Explanation:
Selected ecosystem: Kitakami River
Recovery after a major tsunami attack-criteria and constraints:
Three main criteria are as follows, namely
1.Food Supply
2. Waste reduction
3. Animal breeding
The two main constraints are :
1. Challenge in feeding animals within the allocated budget for recovery.
2. Challenge in regaining back the completely survived species.
1.
Criteria: Food supply
Rationale: Food supplies is placed in many parts of the river in order to help the survival of remaining animals. This approach helps in preventing the major loss of biodiversity
Sub problems addressed: Loss of animal population and reduction in overall biodiversity.
2.
Criteria: Waste reduction
Rationale: The Tsunami has carried along with it a huge pile of waste to the mainland and one of the main problems responsible for dying of animals main due to chemicals and salt contamination. Measures should be taken to remove the contaminants and waster from the river and this will help in slow recovery of the ecosystem back to its original.
Sub problem addressed: Salt and chemical contaminants.
3.
Criteria: Breeding animals
Rationale: In order to recover from the huge destruction of species, breeding programs should be conducted regularly and this helps in improving the animal population and helps to maintain the biodiversity.
Sub problem addressed : Loss of animal population and reduction in overall biodiversity.
Constraints
1. Feeding the entire population by providing food supplies will be very much challenging within the allocated budget for the total recovery of the ecosystem after damage by the tsunami.
2. The next major challenge would be to maintain those surviving species and to help in regaining back the original population.
Step-by-step explanation
Criteria:
-These are defined rules and or directions which must be followed and they can be considered as the must met requirements in any experimental design.
Constraints
-These are defined as those restrictions which keep them from being the best.
The ecosystem that is selected in this case is Kitakami River. One of the main problem that affected this ecosystem is the tsunami.
The sub problems that resulted due to tsunami are as follows:
1.Salt and chemical contaminants:
The tsunami has affected the ecosystem by bringing in many chemical contaminants to the river there by disrupting the normal oxygen availability in the river and affected the species living in that ecosystem.
2.Loss of animal population and biodiversity:
When there is an increase in the death of the animals in the river, it does have a very disruptive effect in both migration and reproduction cycles and is more prominently seen during spawning season.
The Kitakami River:
-It is Japan's fourth largest river basin.
-It houses a very rich freshwater biodiversity including some of the salmonid fish such as
Pacific salmon - Oncorhynchus keta
Japanese salmon-Oncorhynchus masou masou
Ayu - Plecoglossus altivelis altevelis
Shijimi clam- Corbicula japonica
-The destructive impact of waves due to tsunami on the buildings of the port will release chemical materials which will spread over the mouth of Kitakami river and brings in high salinity water and chemical contaminants.
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