Food production：练习题

Which of the following is a physical process in an agricultural system rather than an input or output?

A region experiences a severe food shortage. Which combination of factors is most likely to be the cause?

In an agricultural system undergoing intensification, a farmer increases the use of High-Yielding Varieties (HYVs) and installs a computerized irrigation network. Which combination of impacts on the system's components is most characteristic of this shift?

Which term describes an agricultural system that focuses mainly on rearing animals rather than cultivating crops?

Which statement correctly distinguishes between intensive farming and extensive farming?

State two output products typically produced by a mixed farming system.

Explain how introducing irrigation and high-yielding varieties (HYVs) can help a country reduce the impact of food shortages.

An agricultural area is shifting from subsistence farming to commercial intensive farming. Explain the likely changes in the types of inputs and outputs of this system.

Farming operates as a system involving inputs, processes, and outputs.

Study the systems diagram below, which shows components of a commercial cereal farm.

(a) Identify from the diagram:

(i) One natural (physical) input.
(ii) One process.
(iii) One output.

(b) State one other human input needed on this farm that is not shown in the diagram.

(a) Using the data provided below, draw a bar chart to show the cereal production (in tonnes) for the four different regions:
Region A: 500 tonnes
Region B: 850 tonnes
Region C: 300 tonnes
Region D: 700 tonnes
(b) Describe how natural inputs, such as relief and soil quality, influence the choice of agricultural land use in these regions.
(c) Suggest how the use of modern technology might increase the scale of production in intensive farming systems.