, 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 (6)
isotonic solutions.
1.3 Explain how edges and corridors can strongly influence
landscape biodiversity. (7)
Question 1
1.1 Explanatory Notes on the Greenhouse Effect
(7 marks)
The greenhouse effect is a natural process that
warms the Earth's surface. It occurs when the sun’s
energy reaches the Earth and is absorbed, while
some of it is re-radiated as infrared radiation.
Greenhouse gases, such as carbon dioxide (CO₂),
methane (CH₄), and water vapour (H₂O), trap some
of this heat in the atmosphere, preventing it from
escaping into space.
Importance: It maintains Earth's temperature at
a level suitable for life.
Natural vs. Enhanced Effect: Human
activities, such as burning fossil fuels and
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 (6)
isotonic solutions.
1.3 Explain how edges and corridors can strongly influence
landscape biodiversity. (7)
Question 1
1.1 Explanatory Notes on the Greenhouse Effect
(7 marks)
The greenhouse effect is a natural process that
warms the Earth's surface. It occurs when the sun’s
energy reaches the Earth and is absorbed, while
some of it is re-radiated as infrared radiation.
Greenhouse gases, such as carbon dioxide (CO₂),
methane (CH₄), and water vapour (H₂O), trap some
of this heat in the atmosphere, preventing it from
escaping into space.
Importance: It maintains Earth's temperature at
a level suitable for life.
Natural vs. Enhanced Effect: Human
activities, such as burning fossil fuels and
