4.3 Population–resource relationships Flashcards
What is food security?
The availability, access, and use of sufficient, safe, and nutritious food for a healthy life.
What are the three main components of food security?
Availability, access, and utilisation
What is food insecurity?
A lack of consistent access to sufficient food.
What are the two types of food insecurity?
Long term (Chronic) and Short term
How do conflicts and war impact food security?
They disrupt food production, supply chains, and distribution.
What are the main causes of food shortages?
Droughts, floods, conflicts, poor infrastructure, and population growth.
How do natural disasters cause food shortages?
They destroy crops, disrupt supply chains, and reduce food availability.
How does overpopulation contribute to food shortages?
It increases demand beyond the carrying capacity of the land.
What is famine?
An extreme shortage of food leading to widespread hunger and death.
How have genetically modified (GM) crops improved food security?
They resist pests, tolerate drought, and produce higher yields.
How does technology improve food production?
By increasing yields, reducing waste, and improving efficiency.
What is the Green Revolution?
A period of agricultural innovation using high-yield crops, fertilizers, and irrigation.
What is carrying capacity?
The maximum population an environment can sustain with available resources.
What is overpopulation in terms of resources
When a population exceeds the resources available to support it.
What is underpopulation in terms of resources
When there are not enough people to utilize resources effectively.
What is optimum population in terms of resources
The ideal balance between population size and resource availability for maximum efficiency.
