Name: Biodiversity and Human Impacts
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Question 1 of 10

Question 1
Which of the following environmental reasons do humans farm fish?
- Reducing pressure on wild stocks of fish
- Farmed fish are tastier than wild fish
- Fish farming is more ethical than catching wild fish
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Question 2 of 10

Question 2
Low, antibiotics, high, antigens, diseases, internal, pathogens
- 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 10

Question 3
Which of the following reasons is introducing species to non-native areas bad for biodiversity?
- Can introduce a competitor that outcompetes native/indigenous species
- Can introduce a predator that eats native/indigenous species
- Can increase the stability of an ecosystem
- When people introduce a species, there are rarely any unintended consequences
- Introduced species can bring new pathogens which may infect native species with no resistance to them
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Question 4 of 10

Question 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.
- Rainwater takes away fertilisers as they dissolve in water.
- Oxygen concentration in water decreases.
- Excess nitrates and phosphates are transported by rivers and streams to lakes and ponds.
- Aquatic animals die due to a lack of oxygen.
- Surface organisms block sunlight to aquatic plants, reducing photosynthesis.
- 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.
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Question 5 of 10

Question 5
- Complete the sentence: High levels of biodiversity lead to in ecosystems, since less organisms are less dependent on single species for survival.
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one of these three is correct:
- Stability
- Instability
- Disease
Question 6 of 10

Question 6
Use some of the following words to fill in the blanks:
Houses, habitats, water, food, tree, predator
- 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 Points

Incorrect / 3 Points
Use the following words to answer the question (one word per blank):
- Tree
- Habitats
- Bushes
- Predators
- Food
Question 7 of 10

Question 7
Conservation of habitats is also important to protect endangered species. Which of the following are potential reasons for maintaining high levels of biodiversity?
- Diverse ecosystems contain lots of animal and plant species that could be used for medicines in the future
- As climate change takes place, diverse ecosystems are needed to cope with the changes in environmental conditions
- We need rare species for game hunting so we need to preserve them
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Question 8 of 10

Question 8
Which of the following are benefits to protecting the rainforests of the world?
- Rainforests are not useful to humans in any way, except for wood
- Rainforests contain very high biodiversity and can provide new medicines and other products for humans
- Rainforests provide a carbon sink, removing carbon dioxide from the atmosphere
- Rainforests provide a place for ants to hide from seagulls
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Question 9 of 10

Question 9
Predators are essential for healthy ecosystems – what happens if predators are removed due to extinction?
- Biodiversity is reduced
- Biodiversity increases slightly
- Prey species start hunting each other
- Biodiversity increases dramatically
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Question 10 of 10

Question 10
Which of the following human activities negatively impacts biodiversity?
- Conservation efforts
- Habitat destruction
- Planting trees
- Protecting endangered species
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Biodiversity and Human Impacts Quiz

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Biodiversity and Preserving Biodiversity

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