Final answer:
Slash-and-burn farming is a land-intensive and caloric-efficient farming technique practiced in rainforest areas.
Step-by-step explanation:
Slash and burn, also known as swidden or milpa farming, is a farming technique practiced in rainforest areas. It involves clearing patches of forest, burning the debris, and using the ashes as fertilizer to make the soil more fertile. This type of farming is practiced in equatorial rainforest climates with poor soils and is characterized as land-intensive and caloric-efficient.