1.1 Various options are provided as possible answers to the following questions - NSC Marine Sciences - Question 1 - 2023 - Paper 1
Question 1
1.1 Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A-D) next to the question numbers (1.1.... show full transcript
Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Marine Sciences - Question 1 - 2023 - Paper 1
Step 1
1.1.1 A form of agriculture that combines raising fish together with plant cultures that have no soil:
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Answer
The correct answer is B. Aquaponics. This method integrates aquaculture and hydroponics, allowing for sustainable farming.
Step 2
1.1.2 The tonnage that can be caught in the following season without compromising the future sustainable health of fish stock is referred to as ...
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Answer
The correct answer is C. Total Allowable Catch. This is a management tool to maintain fish populations.
Step 3
1.1.3 Which ONE of the following contributes the most to the carbon dioxide concentration in the atmosphere?
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Answer
The correct answer is B. Deforestation. This practice releases significant amounts of CO2 into the atmosphere.
Step 4
1.1.4 Which ONE of the following is the CORRECT Köppen-Geiger classification for the north-west coast of South Africa?
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Answer
The correct answer is A. BWk. This classification represents a dry desert climate.
Step 5
1.1.5 Destructive waves occur when ...
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Answer
The correct answer is D. There is a stronger backwash than swash. This leads to erosion rather than deposition.
Step 6
1.1.6 Which of the following is CORRECT for the commercial use of algae?
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Answer
The correct answer is B. Red algae Agar. It is widely used as a gelling agent in food products.
Step 7
1.1.7 Which of the following combinations is CORRECT for this type of climate?
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Answer
The correct answer is D. (ii), (iii), (iv) and (v). This describes the Mediterranean climate accurately.
Step 8
1.1.8 Which gas is NOT one of the greenhouse gases found in the Earth’s atmosphere?
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Answer
The correct answer is C. Nitrogen. While important, it is not classified as a greenhouse gas.
Step 9
1.1.9 Which statement is INCORRECT and NOT associated with ocean acidification?
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Answer
The correct answer is D. Increased precipitation of carbonic acid. This is not a direct consequence of ocean acidification.
Step 10
1.1.10 Which of the following combinations is CORRECT for this type of holding system?
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Answer
The correct answer is A. (i), (ii) and (iv). This accurately describes the functionalities of the holding system.
