Answer:
Question 1. b. Tertiary and Quaternary
In developed countries, the tertiary sector, consisting of services such as tourism, hotels, restaurants, healthcare, and education, and the quaternary sector, consisting of sectors like research, information technology, and advanced intellectual activity, tend to be the most important econoimc sectors, because developed countries will have already made the transition from an agricultural economy, to an industrial economy, to a service-based, and intellectual-based economy.
Question 2. a. A gladcier once covered the area
The moraines of Minnesota are a hilly region in the center and in the northeast of Minnesota. The moraines were formed by glaciers, that once covered the area, in several stages, leaving the hilly landscape, and also several shallow lakes that populate the region.
