The correct answer is - 45 percent.
Since the clock produces 45 useful unites energy units for every 100 unites of energy that it uses, than it turns out that the efficiency of the clock is 45 percent.
Sustainable use practices are practices that are used in the use of resources for example that seek to maintain the longevity and continuance of the potential use of that resource. In regards to trees and logging the sustainable use of wood or paper would seek to continue the longevity and vitality of the forests by not overusing these products. Sustainable use will use a resource at a rate that will allow for natural replenishment or incremental use of the resource to prevent harm to the environment and allow the resource to be used far into the future.
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Answer: The Andes mountain range
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The Andes mountain range is located in the <u>western part of South America</u>, contouring the Pacific Ocean coast and part of the Caribbean Sea.
The Andes is the longest mountain range on Earth with the record of having the highest volcanoes on the planet.
Its surface is so extensive that it covers seven countries: Colombia, Venezuela, Ecuador, Peru (running north to south in the middle of its territory), Bolivia, Argentina and Chile.
Volcano/hot spot they are made of many plumesbof lava coming out of the mantal and hardening. After a long time, the crust moves from continental drift but the hot spot stays in the same spot there for creating a new island
