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71
What type of pollution is caused by excessive nutrients leading to algal blooms?
Discuss
Answer & Solution
Answer: Option B
Solution:
Nutrient pollution from nitrogen and phosphorus causes eutrophication, which triggers algal blooms harming water ecosystems.
72
What is the role of buffer zones in environmental sustainability?
Discuss
Answer & Solution
Answer: Option B
Solution:
Buffer zones are protected areas that separate natural ecosystems from human activities.They help preserve biodiversity and reduce pollution impacts.
73
Which of the following is a non-renewable resource?
Discuss
Answer & Solution
Answer: Option C
Solution:
Fossil fuels like coal, oil, and natural gas are non-renewable as they form over millions of years and are depleted faster than they regenerate.
74
What is a major environmental consequence of improper hazardous waste disposal?
Discuss
Answer & Solution
Answer: Option B
Solution:
Improper disposal of hazardous wastes can leach toxic chemicals into groundwater, posing health risks and environmental damage.
75
What is the function of a geological barrier in waste disposal?
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Answer & Solution
Answer: Option B
Solution:
Geological barriers are natural or engineered layers that prevent or slow the movement of contaminants from waste sites into the environment.
76
Which sustainable practice helps reduce the carbon footprint of construction projects?
Discuss
Answer & Solution
Answer: Option A
Solution:
Using local materials reduces transportation emissions and supports sustainability by minimizing the carbon footprint of construction.
77
What is the major source of natural air pollution?
Discuss
Answer & Solution
Answer: Option A
Solution:
Volcanic eruptions release large amounts of gases and particulates naturally into the atmosphere.This is a significant source of natural air pollution.
78
What does the term �carbon sequestration� mean?
Discuss
Answer & Solution
Answer: Option B
Solution:
Carbon sequestration involves capturing CO? from the atmosphere and storing it underground or in vegetation to mitigate climate change.
79
Which of the following contributes most to soil salinization?
Discuss
Answer & Solution
Answer: Option A
Solution:
Excessive irrigation without proper drainage causes salts to accumulate near the surface, degrading soil quality.
80
What is a major concern regarding groundwater contamination by nitrates?
Discuss
Answer & Solution
Answer: Option B
Solution:
Nitrate contamination in groundwater can cause methemoglobinemia or �blue baby syndrome� in infants.This condition reduces oxygen carrying capacity of blood.