Based on the above passage, the following assumptions have been made: 1. Giant icebergs have a bearing on primary productivity and food chains of the Southern Ocean. 2. Melting of giant icebergs can produce climate change effects and impact world fisheries. Which of the assumptions given above is/ are valid?

Passage

Geographers analyzed 175 satellite images of ocean colour, which is an indicator of Phytoplankton productivity at the ocean's surface, and found that giant icebergs are responsible for storing up to 20 percent of carbon in the Southern Ocean. The researchers discovered that melting water from giant icebergs which contains iron and other nutrients, supports hitherto unexpectedly high levels of phytoplankton growth.

QUESTION

CSAT

Medium

Comprehension

Prelims 2024

Based on the above passage, the following assumptions have been made:

Giant icebergs have a bearing on primary productivity and food chains of the Southern Ocean.
Melting of giant icebergs can produce climate change effects and impact world fisheries.

Which of the assumptions given above is/ are valid?

Select an option to attempt

Explanation

Assumption 1 is valid: The passage indicates that giant icebergs increase primary productivity by promoting phytoplankton growth, which forms the base of the ocean's food chain. Assumption 2 is invalid: Although the passage highlights carbon storage and primary productivity, it does not suggest a direct link between iceberg melting and global climate change effects or the impact on world fisheries.

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