<span>The most common site of back pain is the lumbar area</span>
I would say plants. Those plants that grow on the surface of rocks have their roots embedded in the rocks; through wedging action the roots weather the rocks in search of water and nutrients.
Tectonic plates are the result of the mantle cooling on the surface. At plate boundaries or "zones" occure, there are different reactions along the edges of them. Divergent is when two plates move away from one another allowing fresh molten rock to flow to the surface. This results in a volcano. Covergent boundaries are when plates come together, resulting in mountain ranges. Transforming boundaries are when they slide up against each other causing earthquakes. More examples of proof of plate tectonics is the changing of Pangea into the world as we know it and subduction zones that reveal fossils that were deeply buried under layers of earth.
C. Season Change
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Answer:
Population change can simply be described as the changes which occur in the number of people living in a specific are over a period of time. There are a number of factors which determine the change in population:
- birth rate
- death rate
- migration rate
If an area has resources for better human life like good jobs, no malnutrition then more number of people will migrate to this places. As a result, the population will increase in this area. If the increase in population is not controlled then it might cause devastating effects on the area.
For maintaining a balance, the number of birth rates should be equal to the number of death rates.
If the population in an area increases more than its carrying capacity, then people will have to migrate or they will die due to shortage of resources.