Geography Exam 2 Study Guideprimary economic activity - The part of the economy that works with materials from theearth such as mining, fishing, forestry, and especially agriculture.secondary economic activity - The part of the economy that deals with manufacturing:turning raw materials like cotton into products like a tshirt.tertiary economic activity - The part of the economy that deals with basic services likeretail, accounting, education, low-level government jobs, etc.omanufacturing and processing - The economic activity of turning raw materialslike cotton and trees into finished products tshirts and furniture.oinformational technology - The use of technology to move and processinformation.services - Actions or activities that one person performs for another.ogoods - Items purchased to satisfy needs and wants.more developed countries (MDC) - rich countryless developed countries (LDC) - poor countryeconomic interdependence - A condition in which countries have strong economic ties