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, which integrates fish farming with plant cultivation in a symbiotic environment.
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, which signifies the maximum quantity of fish that can be sustainably harvested.
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 A. Rising global temperatures, as they often correlate with increased carbon dioxide levels from various sources.
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. BWh, which indicates a hot semi-arid climate.
Step 5
1.1.5 Destructive waves occur when …
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Answer
The correct answer is A. there is a stronger swash than backwash, leading to significant erosion and sediment removal.
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 Gelling agent for ice cream, which highlights the use of red algae in food production.
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. (i), (ii), (iv) and (v), indicating the Mediterranean characteristics of the climate.
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 B. H2O, as it is not classified as a greenhouse gas in this context.
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. Decreased proportion of carbonic acid, as ocean acidification actually increases carbonic acid concentration.
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 D. (i), (ii), (iv) and (v), which reflects the unique attributes of the multi-layered cage system in aquaculture.
