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Biology for IGCSE & O level - Human Influences On Ecosystems (Section 8)

1
What is the main goal of a breeding program?
Answer
(C)
To help animals survive and reproduce.
2
What is the role of 'ecotourism' in conservation?
Answer
(B)
To provide financial incentives for protecting natural areas.
3
What is the primary goal of captive breeding programs?
Answer
(B)
To increase genetic diversity within a species.
4
What is a consequence of the overuse of fertilizers?
Answer
(B)
Eutrophication
5
Which of the following is a measure to reduce the effects of climate change?
Answer
B
C
6
What is the definition of 'endangered' species?
Answer
(C)
A species at risk of becoming extinct.
7
What are the potential impacts of climate change on wildlife?
Answer
A
B
C
8
What type of pollution can affect human health through the consumption of contaminated seafood?
Answer
(C)
Water pollution
9
Which of the following is an example of an in situ conservation strategy?
Answer
(B)
Creating a national park.
10
Which of the following is the main source of sewage?
Answer
(C)
Domestic waste
11
What is a major cause of water pollution?
Answer
(A)
Agricultural runoff
12
How does the increase of atmospheric carbon dioxide impact the ocean?
Answer
(A)
It makes the ocean more acidic.
13
What is the main effect of ocean acidification?
Answer
(B)
Damage to coral reefs and shellfish.
14
Which human activity is considered the main cause of the increase in atmospheric carbon dioxide?
Answer
(B)
Burning of fossil fuels
15
What is a 'biodiversity hotspot'?
Answer
(B)
An area with a high concentration of endemic species and significant habitat loss.
16
What is a consequence of the disruption of food chains in aquatic ecosystems?
Answer
(C)
Population declines in affected species.
17
Which of the following is NOT a consequence of deforestation?
Answer
(D)
Increased oxygen levels
18
What is the role of 'carbon offsetting' in addressing climate change?
Answer
(B)
To balance out carbon emissions by investing in projects that reduce emissions elsewhere.
19
How does deforestation contribute to climate change?
Answer
(B)
By reducing the amount of carbon dioxide absorbed from the atmosphere.
20
What is the major cause of deforestation?
Answer
(B)
Urbanization and agriculture
21
Which of the following is a result of water pollution from sewage?
Answer
(B)
Harm to aquatic life and spread of diseases.
22
What is the major impact of the loss of biodiversity?
Answer
(C)
Disruption of food chains and ecosystem services
23
Which of the following is the most common cause of desertification?
Answer
(B)
Deforestation and overgrazing
24
Which of the following is an example of a non-renewable resource?
Answer
(C)
Coal
25
Which of the following is an example of how climate change can threaten species?
Answer
(B)
Changes in migration patterns
26
What is a primary function of the ozone layer?
Answer
(B)
Preventing skin cancer.
27
Which is an effect of air pollution?
Answer
A
B
D
28
What are some examples of 'renewable energy sources'?
Answer
(C)
Solar and wind power
29
What is the primary goal of the Convention on International Trade in Endangered Species (CITES)?
Answer
(B)
To regulate the trade of endangered species and their products.
30
Which of the following is a problem caused by a changing climate?
Answer
(B)
Increased sea levels
31
What are some of the benefits of ecotourism?
Answer
A
B
C
32
What type of farming can lead to the depletion of nutrients and soil erosion?
Answer
(C)
Intensive farming
33
What is the most sustainable way to manage forests?
Answer
(C)
Planting trees after harvesting.
34
What is the purpose of 'in-vitro fertilization (IVF)' in conservation?
Answer
(C)
To help endangered animals reproduce.
35
Which of the following best describes the term "carrying capacity"?
Answer
(B)
The maximum population size an environment can sustain.
36
What is the impact of 'eutrophication' on aquatic ecosystems?
Answer
(A)
It decreases the amount of oxygen in the water.
37
What are some actions that can be taken to combat climate change, which can support conservation?
Answer
A
B
C
38
What is the relationship between deforestation and climate change?
Answer
(B)
Deforestation increases climate change by releasing stored carbon.
39
Which is a cause of soil erosion?
Answer
(B)
Deforestation
40
What is the main purpose of composting?
Answer
(B)
To reduce the amount of waste in landfills
41
What is a consequence of ocean acidification?
Answer
(B)
Shell formation problems in marine organisms.
42
Which human activity is most responsible for the loss of natural habitats?
Answer
(B)
Agriculture and urbanization
43
What are some ways that governments can contribute to conservation efforts?
Answer
A
B
C
44
Which activity can deplete the ozone layer?
Answer
(B)
Using chlorofluorocarbons (CFCs)
45
Which of the following is a negative impact of intensive farming?
Answer
(B)
Soil erosion and depletion of nutrients.
46
Which of the following can lead to a reduction in water quality?
Answer
A
B
C
47
What is the role of 'environmental impact assessments'?
Answer
(B)
To assess the potential environmental consequences of a project.
48
Which of the following is a key characteristic of a sustainable ecosystem?
Answer
(C)
Biodiversity and the cycling of nutrients.
49
Which human activity is a primary cause of the decline in fish stocks?
Answer
(C)
Overfishing.
50
What is a significant challenge in managing invasive species?
Answer
(D)
All of the above.