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Questions and Answers
What primarily causes nutrient pollution that promotes algal growth in water?
What primarily causes nutrient pollution that promotes algal growth in water?
- Introduction of non-native species to aquatic ecosystems
- Runoff of wastewater from agricultural lands (correct)
- Rising sea temperatures due to climate change
- Runoff of fertilizers from industrial lands
What can further exacerbate the problem of Harmful Algal Blooms?
What can further exacerbate the problem of Harmful Algal Blooms?
- Introduction of non-native species to aquatic ecosystems (correct)
- Changes in precipitation patterns due to climate change
- Rising sea temperatures due to nutrient pollution
- Runoff of fertilizers from industrial lands
What are the impacts of Harmful Algal Blooms on aquatic environments?
What are the impacts of Harmful Algal Blooms on aquatic environments?
- Reduction in water temperature and increase in water clarity
- Depletion of oxygen levels, production of toxins, and interruption of the food chain (correct)
- Production of toxins, and decrease in algal growth
- Depletion of oxygen levels, and increase in food chain productivity
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Study Notes
What are Harmful Algal Blooms (HABs)?
- Excessive growth of algae in aquatic environments, leading to negative impacts on ecosystem, human health, and economy
- Algae are photosynthetic organisms that play a crucial role in food chain and oxygen production
Formation of HABs
- Occur under certain conditions: increased nutrient levels and warm water temperatures
- Some algae species multiply rapidly, forming dense colonies known as blooms
Characteristics of HABs
- Water discoloration: green, red, or brown hues due to high concentrations of algae
- Blocking sunlight, reducing light availability for photosynthesis and affecting growth and survival of other organisms
Impacts of HABs
- Negative impacts on aquatic organisms, including fish, shellfish, and marine mammals
- Toxins released by some algae species can harm aquatic life and humans
- Human consumption of contaminated organisms can lead to food poisoning and health issues
Factors Influencing HABs
- Nutrient pollution
- Climate change
- Human activities
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