Coastal marine ecosystems in Southeast Asia are under threat from rapid land reclamation as more and more luxury resorts and commercial ports are constructed on pristine coral reefs. It has been estimated that by 2040 nearly a quarter of the region's shallow-water reefs could be lost to development.
From the passage above, it can be inferred that
marine ecosystems are economic resources.
the opportunity cost of marine space is zero.
the market price of reclaimed land is lower than the price of natural reef conservation.
the private cost of coastal development is greater than its social cost.
123 exam-style questions on AQA A Level Economics 1.1 Economic methodology and the economic problem, covering 1.1.1 Economic methodology, 1.1.2 The nature and purpose of economic activity, 1.1.3 Economic resources, 1.1.4 Scarcity, choice and the allocation of resources, and 1.1.5 Production possibility diagrams. Each one has a worked solution and a mark scheme showing where the marks go.