Question

1. niagara falls formed where the niagara river flowed over what landform?
2. what specific type of rock holds up niagara falls?
3. why do so few people inhabit the tug hill plateau?

1. what page of the earth science reference tables has a landscapes map?
2. why do figure 15-9 and the earth science reference tables have slightly different landscape boundaries?

Explanation:

1. Niagara Falls formed over a cuesta (a tilted rock layer with a steep scarp and gentle dip slope).
2. The resistant rock holding up Niagara Falls is dolostone (a carbonate rock similar to limestone).
3. The Tug Hill Plateau has sparse population due to heavy snowfall, poor soil, and rugged terrain limiting agriculture and development.
4. The Earth Science Reference Tables typically have a landscapes map on Page 2 (varies by edition, but common in standard versions).
5. Different map sources use slightly different criteria or data for defining landscape boundaries, leading to minor discrepancies.

Answer:

1. Cuesta
2. Dolostone
3. Heavy snowfall, poor soil, and rugged terrain
4. Page 2 (standard edition)
5. Different mapping criteria or data sources