Choose the correct answer:

Consider the following statements.

1. Most of the fishing grounds occur in areas where the continental shelf is wide.

2. Fishing is well developed in warm tropical waters.

3. Mixing of warm and cold currents facilitates plant nutrients for fish.

4. Inland fishing became significant in India.

Statement 1 is correct because where the continental shelf is wide it enables sunlight to penetrate through the water. This encourages abundant growth of grass, sea weeds and plankton. Hence these zones become the richest fishing grounds in the world.

Statement 2 is correct because the planktons in the sea cannot withstand the warmness and thus the fishes will not get their food and thus fishing is well developed in tropical waters.

Statement 3 is correct because the mixing of warm and cold currents encourage the growth of planktons thus it facilitates plant nutrients for fish.

Statement 4 is wrong because inland fishing is not that much popular and need to be developed more thus it is insignificant.