Pollution management strategies can be applied at different levels. Pollution may be non-point or point source, persistent or biodegradable, acute or chronic.
Evaluate the effectiveness of each of the three different levels of intervention, with reference to figure 3. Evaluate the uses of DDT. Pollution which arises from numerous widely dispersed origins is described as non-point source.
With reference to Figure 3 belowstudents should appreciate the advantages of employing the earlier strategies of pollution management over the later ones, and the importance of collaboration. Guidance Sources of freshwater pollution should include runoff, sewage, industrial discharge and solid domestic waste.
Pollutants may be primary active on emission or secondary arising from primary pollutants undergoing physical or chemical change. A biotic index indirectly measures pollution by assaying the impact on species within the community according to their tolerance, diversity and relative abundance.
Biodegradation of organic material utilizes oxygen, which can lead to anoxic conditions and subsequent anaerobic decomposition, which in turn leads to formation of methane, hydrogen sulfide and ammonia toxic gases.
With respect to measuring aquatic pollution, a polluted and an unpolluted site for example, upstream and downstream of a point source should be compared. Eutrophication can occur when lakes, estuaries and coastal waters receive inputs of nutrients nitrates and phosphateswhich results in an excess growth of plants and phytoplankton.
Types of aquatic pollutants include floating debris, organic material, inorganic plant nutrients nitrates and phosphatestoxic metals, synthetic compounds, suspended solids, hot water, oil, radioactive pollution, pathogens, light, noise and biological pollutants invasive species.
The role of positive and negative feedback in the process of eutrophication should be covered. Applications and Skills Explain the process and impacts of eutrophication. Biochemical oxygen demand BOD is a measure of the amount of dissolved oxygen required to break down the organic material in a given volume of water through aerobic biological activity.
Sources of marine pollution should include rivers, pipelines, atmosphere and activities at sea operational and accidental discharges.
Application of figure 3 to water pollution management strategies includes: Dead zones in both oceans and fresh water can occur when there is not enough oxygen to support marine life. Applications and Skills Construct systems diagrams to show the impact of pollutants. Pollution is a highly diverse phenomenon of human disturbance in ecosystems.
Evaluate pollution management strategies with respect to water pollution. Knowledge and Understanding There are a variety of freshwater and marine pollution sources.
A wide range of parameters can be used to directly test the quality of aquatic systems, including pH, temperature, suspended solids turbiditymetals, nitrates and phosphates.
Students should be aware that for some pollutants there may be a time lag before an appreciable effect on organisms is evident. Some species can be indicative of polluted waters and can be used as indicator species. Knowledge and Understanding Pollution is the addition of a substance or an agent to an environment through human activity, at a rate greater than that at which it can be rendered harmless by the environment, and which has an appreciable effect on the organisms in the environment.
Pollutants may be in the form of organic or inorganic substances, light, sound or thermal energy, biological agents or invasive species, and may derive from a wide range of human activities including the combustion of fossil fuels. BOD is used to indirectly measure the amount of organic matter within a sample.
Students might demonstrate knowledge of both the anti-malarial and agricultural use of DDT. Coastal eutrophication can lead to red tide blooms. Evaluate the uses of indicator species and biotic indices in measuring aquatic pollution.IB ESS Topic 5 Pollution Management 1. What is Pollution?
Undesirable change in the physical, chemical, or biological characteristics of the air, water, or land that can harmfully affect the health, survival, or activities of human or other living organisms.
Soil Degradation and Conservation IB ESS Mrs. Page. SIGNIFICANT IDEAS •Fertile soils require significant time to develop through the process of succession. •Human activities may reduce soil fertility and increase •Overuse of.
Oct 01, · Topic 1: Foundations of ESS (16 hours) Environmental Value Systems. Systems & Models. Energy & Equilibria.
Sustainability. Humans & Pollution. Eutrophication can occur when lakes, estuaries and coastal waters receive inputs of nutrients (nitrates and phosphates), which results in an excess growth of.
Choose from different sets of vocabulary topic 5 pollution management flashcards on Quizlet. ESS Topic 5/ Unit 4 Pollution Management.
Pollution. Point source. Eutrophication. the process of a body of water becoming nutrient-rich. 7 terms. Oct 01, · Topic 1: Foundations of ESS (16 hours) Environmental Value Systems. Systems & Models. Eutrophication.
Solid Domestic Waste. Ozone Depletion.
Urban Air Pollution. The principles of this sub-topic, particularly Figure 3 (below), should be used throughout the course when addressing issues of.
ESS Topic 5: Pollution Management. STUDY. PLAY. Define the term pollution. It can be a natural process but anthropogenic eutrophication has accelerated it.
The nutrients are usually nitrates and phosphates which come from detergents, fertilisers, sewage, and increased erosion of top soil.Download