What do you know about eutrophication?
Biodiversity and Human Impacts Quiz
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Question 1 of 8Question 1
Which of the following environmental reasons do humans farm fish?
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Question 2 of 8Question 2
Low, antibiotics, high, antigens, diseases, internal, pathogens
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Complete the sentence: Fish farming is problematic because fish are kept at densities where uneaten food and waste can accumulate quickly and change abiotic conditions for native species. Parasites and also spread relatively easily between densely packed fish, leading to the use of to protect fish from bacterial infections.
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Question 3 of 8Question 3
Which of the following reasons is introducing species to non-native areas bad for biodiversity?
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Question 4 of 8Question 4
Put the statements in the correct order: 7) Aquatic animals die due to a lack of oxygen. 2) Rainwater takes away fertilisers as they dissolve in water. 4) Nitrates and phosphates were limiting factors for algal/plant growth on the surface of the water, but they are now available causing rapid increase in growth. 6) Excess nitrates and phosphates are transported by rivers and streams to lakes and ponds. 3) Oxygen concentration in water decreases. 5) Surface organisms block sunlight to aquatic plants, reducing photosynthesis. 7) Farmers add fertilisers (nitrates and phosphates) to their fields.
- Nitrates and phosphates were limiting factors for algal/plant growth on the surface of the water, but they are now available causing rapid increase in growth.
- Excess nitrates and phosphates are transported by rivers and streams to lakes and ponds.
- Surface organisms block sunlight to aquatic plants, reducing photosynthesis.
- Aquatic animals die due to a lack of oxygen.
- Oxygen concentration in water decreases.
- Rainwater takes away fertilisers as they dissolve in water.
- Farmers add fertilisers (nitrates and phosphates) to their fields.
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Question 5 of 8Question 5
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Complete the sentence: High levels of biodiversity lead to in ecosystems, since less organisms are less dependent on single species for survival.
CorrectIncorrectone of these three is correct:
- Stability
- Instability
- Disease
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Question 6 of 8Question 6
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Complete the answer to the question: How can reforestation increase biodiversity? Through planting a variety of species, the diversity of will increase, leading to opportunities for a range of species for , shelter and mates.
Correct 3 / 3 PointsIncorrect / 3 PointsUse the following words to answer the question (one word per blank):
- Tree
- Habitats
- Bushes
- Predators
- Food
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Question 7 of 8Question 7
Conservation of habitats is also important to protect endangered species. Which of the following are potential reasons for maintaining high levels of biodiversity?
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Question 8 of 8Question 8
Which of the following are benefits to protecting the rainforests of the world?
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