The basic theory of plate tectonics is that along seafloor spreading zones, the continents are separating from one another. As they spread apart, magma comes to the surface and becomes new continental crust. As the tectonic plates move away from spreading zones, they collide with one another.
Answer:
<u>Life expectancy index, Education index, Literacy index, Income index all the countries are ranked based on these parameters</u>.
Explanation:
- As HDI is a statistical composite index and the formula for calculating the Human Development Index is (life expectancy x education index x income index).
- The higher the score the higher is the value of the development of the country. Developed by Dr. Mahbub Al Haq and Amartya sen.
- The HDI shows low human development scores from 0.0 to 0.5. The medium human development scores between 0.5 and 0.8. High human development for HDI scores ranges from 0.8 and 1.0.
- Though there are limiting factors of HDI as it does not take into account the qualitative factors and cultural identity into considerations, As others have suggested the HDI should be more human-centered ranging from gender to environmental biodiversity.
Population density is the study of how many people live in some area as compared to other areas - this helps for example predict whether the area can preduce enough food for itself. It is measured in the number of people per a unit of area.
The correct answer then is:
<span> the number of people who live in a square mile or kilometer</span>
