Unequal radiation on a sphere: more solar radiation on a unit area of earths surface near the equator than at the poles because of the more direct angle of incoming solar radiation.
Answer:
Physical weathering is most active where temperature and rainfall are both low. Chemical weathering is most active in regions of high temperature and rainfall. Most world regions experience a combination of both physical and chemical weathering.
Explanation:
Answer:
When non metals such as nitrogen and phosphorus are solids, they tend to be very dull and brittle which is due to the tendency of elements to revert to their original form.
Answer:
1990 and 2010

Explanation:
Let:

We need to know, in what year(s) the villages had the same population, mathematically this is:

So:

Solving for x:
Factoring

Hence:

Therefore the year(s) which the village had the same population are:

In order to find the population of both cities during the year(s) of equal population, just evalue the equations at x=15 and x=35:
