Challenges for growing crops are you don't know if it will be successful, you have to have enough water, the dirt has to be fertile, and the weather may affect how the plant grows.
Answer:

=> D. Scarcity of water resources caused more disputes between nations in recent years compared to oil.
Answer:
B.
The data is linked to locations.
Explanation:
A Geographic Information System(GIS) is a system designed to capture, store, manipulate, analyse, manage and present all types of geographical data. GIS describes any information system that integrates stores, edits, analyses, shares and displays geographic information for informing decision making.
A geographic data is any data that has locational attributes or characteristics.
Explanation:
Of all the continents, Europe and Asia are the most densely populated. Asia alone contains more than 60 percent of the world's people. Which continents are most densely populated? Today, most people in Europe, North America, South America, and Australia live in or around urban areas.