What are the principal factors in determining climate?

The temperature of the planet is affected by these materials, but also by the Earth's position in relation to the sun. The Earth's positioning changes very slowly around the sun, which also affects the climate on the planet by changing the amount of energy that the planet absorbs. As ice melts or builds up, the water around it is affected along with the atmosphere near it, which in turn influences the air and temperatures around the world.  

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no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

answer; /// i believe that the correct answer is(cognitive revolution);