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Questions and Answers
Which of the following is NOT a cause of desertification?
Which of the following is NOT a cause of desertification?
- Overgrazing
- Deforestation
- Planting trees (correct)
- Excessive use of fertilizers and pesticides
Desertification affects only urban areas.
Desertification affects only urban areas.
False (B)
What is the primary focus of environmental health?
What is the primary focus of environmental health?
The relationship between people and their environment to promote human health and well-being.
One cause of desertification is __________, where livestock grazes excessively on vegetation.
One cause of desertification is __________, where livestock grazes excessively on vegetation.
Match the following practices with their potential impact on desertification:
Match the following practices with their potential impact on desertification:
Which of the following is NOT a cause of desertification?
Which of the following is NOT a cause of desertification?
Desertification can only occur in arid regions.
Desertification can only occur in arid regions.
What are two key components of Environmental Health?
What are two key components of Environmental Health?
Desertification is the process by which vegetation in __________ and semi-arid lands decreases.
Desertification is the process by which vegetation in __________ and semi-arid lands decreases.
Match the following causes of desertification with their descriptions:
Match the following causes of desertification with their descriptions:
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Study Notes
Environmental Health
- Environmental health focuses on the relationship between people and their environment.
- The aim is to promote human health and well-being, fostering healthy communities.
- Key aspects of environmental health include clean water, disease control, sanitation, and hygiene.
Desertification
- Desertification is the process by which vegetation in drylands decreases and eventually disappears.
- Drylands encompass arid and semi-arid lands like grasslands or shrublands.
- The process leads to the degradation of land and loss of its productivity.
Causes of Desertification
- Overgrazing, where livestock consume vegetation faster than it can regenerate is a significant contributor.
- Unsustainable farming practices such as monoculture and poor land management can deplete soil fertility and lead to erosion.
- Deforestation removes trees that play a vital role in preventing soil erosion, regulating water cycles, and providing habitats.
- Excessive use of fertilizers and pesticides can pollute water sources, harm biodiversity, and degrade soil quality.
- Overdrafting of groundwater occurs when extraction rates exceed recharge rates, leading to depletion of water resources and land subsidence.
- Natural disasters such as droughts and wildfires can accelerate desertification processes.
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