Discuss some of the ways of managing coastal erosion
What will be an ideal response?
Answer: A coast is an especially active area of erosion because an enormous amount of energy is concentrated on the shorelines from pounding waves. Coastal land may be lost to erosion, or gained through deposition, at rates up to several meters per year. Rising sea level accelerates many coastal processes and increases vulnerability of coastal communities
Because of the high rates of change that can occur in coastal environments, and because many commercial and recreational activities are focused there, humans actively manage coastal processes by building breakwaters that parallel the shoreline, jetties and groins that are perpendicular to it, and similar structures. A jetty constructed in one location along the shore to interrupt the movement of sand will cause less sand to be deposited on a beach farther along the shore, worsening the erosion problem there. People also build sea walls parallel to the shore, but the constant pounding of waves removes sand from around the sea walls and ultimately undermines them.
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The concept of human rights emerged in
A. The United States B. Europe C. Asia D. The United States and Europe
Since 1900, greenhouse gas emissions associated with burning fossil fuels and deforestation have warmed Earth's atmosphere by approximately ________
A) 5°C B) 0°C C) 1°C D) 8°C E) 3°C
Although oceanic ridges can be as tall as some mountains on the continents, list some ways that oceanic ridges are different
What will be an ideal response?
A great circle:
a. cuts Earth into two hemispheres. b. is an exact circumference of Earth. c. provides the shortest routes of travel on Earth's surface. d. all of these