CCST 4009 Environmental Challenges and Sustainability
Assignment 1
Submission Due Date: 25 Oct 2024 (Fri)
SECTION A – Multiple Choice Answer Questions (30 marks)
Each question has one correct answer.
1. Which of the process(es) involve releasing carbon dioxide gas to the atmosphere?
I. Respiration
II. Photosynthesis
III. Limestone formation
IV. Combustion of fossil fuels
V. Fossilization of dead plants and animals
A.I only
B. II and III C.I and IV
D.II, III and V
E.I and IV and V
2. Which of the following is NOT the source of second-generation biofuel?
A. Fuelwood
B. Sugarcane
C. Switchgrass
D. Logging residues
E. Fast-growing trees
3. Which of the following is NOT a reason of loss of biodiversity?
A.Pollution
B. Growing appetite for food
C. Over-exploitation of species
D.Keeping animals in zoological parks
E. Loss of habitat and fragmentation
4. Which of the following steps is NOT involved in liquefied natural gas (LNG) production?
A.Cracking of hydrocarbons
B.Drying
C.Removal of acid gas
D.Removal of mercury
E. Separation between hydrocarbons and LNG
5. Which of the following options is NOT classified as services of ecosystem?
A.Pollination
B.Erosion regulation
C.Pest management
D.Water purification
E. Lumber utilization
6. Which of the following is NOT classified as global trends?
A.A loss of biodiversity
B.World population explosion
C.Reduce of human poverty
D.Decline of vital ecosystem services
E. Negative impacts of global climate change
7. does NOT require a turbogenerator to produce electricity.
A.Ocean Thermal Energy Conversion
B.Flat-plate Collector
C.Enhanced Geothermal Systems
D.Wind Turbine
E. Solar Cells
8. Which of the following is the correct sequence of levels of organization in living things?
A. Tissue → Molecule→ Cell → Organ → Organism → Ecosystem
B. Cell → Organ → Organism → Biosphere → Ecosystem → Community
C. Atom → Cell → Organ → Organism → Population → Community
D. Molecule → Atom →Tissue → Cell → Population → Organism
E. Biosphere →Tissue → Organism → Community → Population → Ecosystem
9. largely comes from soybean oil.
A.Biodiesel
B. Biomass
C. Biogas
D.Bioethanol
E. Gasohol
10. Which of following statements about coal gasification is INCORRECT?
A.It relieves stress from oil and gas supply.
B. The first step is known as steam reforming.
C. It involves heating coal in the absence of air.
D.It yields coal gas, mixtures of hydrocarbons, hydrogen gas and carbon dioxide.
E. Metal catalyst is not involved in this process.
Section B – Structural Questions (20 marks)
1. (7 marks)
(a) What is biological available nitrogen? (1 mark)
(b) State two examples of reactive nitrogen. (2 marks)
(c) How does non-reactive nitrogen in the air become reactive? (2 marks)
(d) Name the process that releases dinitrogen gas back to the atmosphere. (1 mark)
(e) Why nitrogen cycle is unique? (1 mark)
2. Referring to the size of molecules, compare and contrast petroleum refinement. (6 marks)
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Large molecules
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Small molecules
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3. Choose one of the following terms which matches the description. (7 marks)
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Chemical decomposers
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Greenhouse Effect
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Ocean Thermal-Energy
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Mutualism
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Limiting factor
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Detritus feeders
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Silicon
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Coal Liquefaction
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Anaerobic fermentation
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Renewable energy
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Respiration
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Photovoltaic cell
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Coal Gasification
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Oil refinement
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Aerobic digestion
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Reactive nitrogen
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Biomass energy
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Flat-Plate Collector
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Carbon dioxide
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Biosphere
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Atmosphere
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Non-renewable energy
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Photosynthesis
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Non-reactive nitrogen
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There are seven questions in Q3. They will be released in class.