'Robusta' is a major commercial variety of which of the following crops?

Consider the following statements regarding Quaternary Activities: 1. These activities involve the collection, production, and dissemination of information. 2. They are tied to resources, affected by the environment, or necessarily localized by the market. 3. These activities center on research and development. 4. Like some tertiary functions, quaternary activities cannot be outsourced. Select the correct answer using the codes given below:

Where are the world's major commercial fishing grounds predominantly located?

In which country are the famous iron ore mining regions of 'Noamundi' and 'Gua' located?

Which of the following is considered a tertiary economic activity?

Which country is the world's largest producer of copper ore?

Manufacturing falls under which type of economic activity?

Which group of countries shows the correct descending order of crude steel production globally in 2015?

Which of the following pairs of economists/geographers and their models is NOT correctly matched?