1 Does reducing population solve the problem of excessive environmental impact?
2 To control the population, how many children should a couple have at least to achieve this goal?
3 The Earth has a carrying capacity that can support a certain population size. What does this carrying capacity mean?
4 How has humanity increased the Earth's carrying capacity for the population?
5 Can all types of wood be considered renewable resources? Why or why not?
6 The minerals in soil needed by plants are renewable resources, but the minerals humans use to make various items are not. Why?
7 What types of energy sources are considered renewable? Why are they renewable?
8 Is solar energy a renewable energy source? Why?
9 Metals are non-renewable resources. What methods can humans use to address the shortage of metal resources?
10 Why do the following fishing methods harm the environment?
(I) Dynamite fishing
(II) Trawling
(III) Drift net fishing
11 How does the coral reef ecosystem function?
12 Do all ecosystems have producers? How do underground or deep-sea ecosystems function?
13 What are the environmental impacts of artificial aquaculture? Explain each possible impact.
14 Some say that since humans began farming, the environment has inevitably been damaged and worsened over time. Do you agree? Explain.
15 Explain the impact of agriculture on human development.
16 Chemical pesticides are always harmful to the environment. Do you agree? Explain.
17 Why are organisms at the top of the food chain most affected by pesticides? Explain.
18 How does plastic affect aquatic organisms?
19 The components of chemical fertilizers are nutrients that plants need. Why do they still cause pollution?
20 Excessive amounts (i.e., a large dosage in a short period) of inorganic salts can cause algae to overgrow. What impact does this have on the ecosystem?
21 Ecosystems generally maintain balance when experiencing slight changes. Under what circumstances (including both biological and non-biological factors) can an ecosystem be disrupted?
22 Some say that introducing a new species into an ecosystem will not affect it because, after some time, the species will coexist with others. Do you agree? Explain.
23 When organic wastewater is discharged into a river, the number of bacteria may suddenly increase or increase rapidly after some time. Explain why.
24 What changes occur in other factors (bacteria, oxygen, and inorganic salts) in a river when organic wastewater is discharged? Explain.
25 When organic wastewater is discharged into a river, the number of algae may initially increase, remain unchanged, or decrease. Explain why.
26 What factors cause the oxygen levels in water to rise and fall, respectively?
27 Industrial wastewater usually has one specific effect on various organisms in the water. What is this effect, and why?
28 If the population continues to grow, urbanization might reduce environmental damage. Why might this be?
29 Rivers have a self-purification ability for wastewater. What is the mechanism behind this self-purification?
30 If a village near a river discharges wastewater, the water quality will deteriorate. How far downstream should the next nearest village be to prevent worsening water quality?
31 Toxic substances (e.g., DDT) are not easily decomposed. How do they affect organisms higher up in the food chain?
32 When building railways like high-speed rail (with fences to prevent people and animals from entering the tracks), what impact does it have on local wildlife? Explain. What measures can reduce this impact?
33 Land reclamation will inevitably have adverse effects on marine life in the short term. Explain why.
34 Land reclamation does not necessarily permanently impact an ecosystem. How can its impact be reduced?
35 All acidic gases have similar effects on the human body. Explain.
36 Are carbon particles always inhaled into the human body? Explain.
37 What components in the air can be prevented from entering the body by wearing a mask?
38 What air pollutants cannot be prevented by wearing a mask? Why?
39 Standard masks (e.g., N95) block about 95% of particles in the air. N99 masks block about 99%. What disadvantages might there be to wearing an N99 mask?
40 Why does carbon monoxide cause hypoxia?
41 Lead has less impact on adults but significantly affects children. Why?
42 Under what circumstances do cars emit more carbon monoxide?
43 Carbon monoxide is colorless and odorless. Why can we smell gas leaks but not easily detect carbon monoxide from car exhaust?
44 What is the rationale behind the "turn off your engine" policy?
45 In places where rivers are heavily polluted, locals are prone to gastrointestinal diseases. How can people prevent infections from using polluted water?
46 Will the melting of floating sea ice raise the sea level? Why or why not?
47 Which ice, when melted, will lead to an increase in sea level?
48 Will a 1°C temperature increase cause drastic changes on Earth? Explain.
49 Methane is actually the most heat-absorbing molecule in the air. Why is there more emphasis on reducing carbon dioxide emissions instead of methane?
50 Can global warming make some places colder?
51 Global warming will generally not cause most species to go extinct. Why? What impact will it have on ecosystems? Explain.
52 Acid rain is not defined as simply acidic rain because, under normal circumstances, all rainwater is acidic. Why?
53 Why do different regions have different threshold values for defining acid rain?
54 The leaves of some trees, such as pine trees, are acidic. What advantage might this trait provide for their survival?
55 What types of materials used in building construction are more vulnerable to acid rain?