BLG1501 Assignment 2
(COMPLETE ANSWERS)
Semester 1 2025 (225234) -
DUE 11 April 2025
FOR ASSISTANCE CONTACT:
, BLG1501 Assignment 2 (COMPLETE
ANSWERS) Semester 1 2025 (225234) - DUE
11 April 2025
Question 1 [20] 1.1 Write explanatory notes on the
greenhouse effect. (7) 1.2 Distinguish between
hypertonic, hypotonic, and isotonic solutions. (6)
1.3 Explain how edges and corridors can strongly
influence landscape biodiversity. (7)
Here are detailed responses to your questions:
1.1 Explanatory Notes on the Greenhouse Effect (7)
The greenhouse effect is a natural process that warms the Earth's surface. It occurs
when the Earth's atmosphere traps heat from the Sun, preventing it from escaping
back into space. The key points to include are:
1. Solar Radiation: The Sun emits energy in the form of shortwave radiation,
which passes through the Earth's atmosphere and reaches the surface.
2. Absorption and Reradiation: The Earth's surface absorbs this energy and
then radiates it back as longwave infrared radiation.
3. Greenhouse Gases: Certain gases, such as carbon dioxide (CO₂), methane
(CH₄), and water vapor (H₂O), trap some of this outgoing infrared radiation,
keeping the planet warm.
4. Warming Effect: Without the greenhouse effect, Earth's average
temperature would be about -18°C, making it too cold to sustain life.
5. Anthropogenic Influence: Human activities, such as burning fossil fuels
and deforestation, increase greenhouse gas concentrations, leading to global
warming.
6. Consequences: Excessive greenhouse gases contribute to climate change,
causing rising temperatures, sea level rise, and extreme weather events.
7. Mitigation: Solutions include reducing fossil fuel use, increasing renewable
energy sources, and enhancing carbon sequestration through afforestation.
(COMPLETE ANSWERS)
Semester 1 2025 (225234) -
DUE 11 April 2025
FOR ASSISTANCE CONTACT:
, BLG1501 Assignment 2 (COMPLETE
ANSWERS) Semester 1 2025 (225234) - DUE
11 April 2025
Question 1 [20] 1.1 Write explanatory notes on the
greenhouse effect. (7) 1.2 Distinguish between
hypertonic, hypotonic, and isotonic solutions. (6)
1.3 Explain how edges and corridors can strongly
influence landscape biodiversity. (7)
Here are detailed responses to your questions:
1.1 Explanatory Notes on the Greenhouse Effect (7)
The greenhouse effect is a natural process that warms the Earth's surface. It occurs
when the Earth's atmosphere traps heat from the Sun, preventing it from escaping
back into space. The key points to include are:
1. Solar Radiation: The Sun emits energy in the form of shortwave radiation,
which passes through the Earth's atmosphere and reaches the surface.
2. Absorption and Reradiation: The Earth's surface absorbs this energy and
then radiates it back as longwave infrared radiation.
3. Greenhouse Gases: Certain gases, such as carbon dioxide (CO₂), methane
(CH₄), and water vapor (H₂O), trap some of this outgoing infrared radiation,
keeping the planet warm.
4. Warming Effect: Without the greenhouse effect, Earth's average
temperature would be about -18°C, making it too cold to sustain life.
5. Anthropogenic Influence: Human activities, such as burning fossil fuels
and deforestation, increase greenhouse gas concentrations, leading to global
warming.
6. Consequences: Excessive greenhouse gases contribute to climate change,
causing rising temperatures, sea level rise, and extreme weather events.
7. Mitigation: Solutions include reducing fossil fuel use, increasing renewable
energy sources, and enhancing carbon sequestration through afforestation.
