Which public health hazards most directly result from the activities shown? Select the two correct answers. (1 point) Responses deforestation of arable land deforestation of arable land pollution of fresh water sources pollution of fresh water sources destruction of ecosystems destruction of ecosystems flooding of populated areas flooding of populated areas dangerous levels of smog
The two correct answers are:
1. Deforestation of arable land
2. Pollution of fresh water sources
The two public health hazards that most directly result from the activities shown are:
1. Pollution of fresh water sources: Deforestation can lead to soil erosion and increased sediment runoff into water bodies, resulting in pollution of fresh water sources. This can lead to waterborne diseases and contamination of drinking water.
2. Destruction of ecosystems: Deforestation and the associated destruction of ecosystems can have negative impacts on public health. By removing habitats and disrupting natural ecosystems, this can lead to the loss of biodiversity, increased risk of disease transmission, and potential exposure to vector-borne illnesses.
Therefore, the correct answers are pollution of fresh water sources and destruction of ecosystems.
To determine which public health hazards most directly result from the activities shown, we need to identify the activities described and then analyze their potential consequences. In this case, the activities mentioned are not explicitly stated, so we'll consider each option separately and determine their potential impact on public health.
1. Deforestation of arable land: The process of deforestation involves clearing forests for various purposes such as agriculture, logging, or urbanization. This can lead to several health hazards. Firstly, deforestation reduces the availability of oxygen as trees are crucial for producing oxygen through the process of photosynthesis. Secondly, it can contribute to soil erosion, which may lead to food shortages and malnutrition. Lastly, deforestation can disrupt natural ecosystems, increasing the risk of exposure to infectious diseases carried by animals.
2. Pollution of fresh water sources: If activities result in the pollution of fresh water sources, it can have severe consequences on public health. Contaminated water can lead to various waterborne diseases such as diarrhea, cholera, or typhoid. Additionally, polluted water sources can impact agricultural productivity and cause food scarcity, further compromising public health.
3. Destruction of ecosystems: The destruction of ecosystems can have indirect and direct implications for public health. Disrupting ecosystems may disturb the natural balance and increase the risk of disease transmission from animals to humans. Habitat loss can also impact biodiversity and reduce the availability of natural resources that support human wellbeing.
4. Flooding of populated areas: Flooding can pose significant health hazards, especially in populated areas. Floodwater may become contaminated with sewage, chemicals, or other hazardous substances, increasing the risk of waterborne diseases, infections, and injuries. Displacement due to flooding can also lead to overcrowding and inadequate living conditions, further exacerbating public health problems.
5. Dangerous levels of smog: Smog is a mixture of air pollutants, often generated by industrial activities, vehicle emissions, and burning fossil fuels. Exposure to high levels of smog can cause respiratory problems, aggravate existing respiratory conditions such as asthma, and increase the risk of heart disease and lung cancer.
Based on the potential consequences mentioned above, the two correct answers regarding public health hazards resulting from the activities shown are:
- Deforestation of arable land
- Pollution of fresh water sources