What do u want me to answer?
<span><span>The BEST
answer is </span>Social and
economic differences promote a different kind of cultural development on either
side of the border. </span>
Boundaries restrict movement between
the two ethnic groups. This results to accumulation of differences in social
and economic activities due to relative exclusivity until they are well pronounced to be perceptible.
The answer is B. Seismic waves.
Translate this to english and I can do it
If I would have the chance to encourage people I would like them to use renewable energies that are good for the environment and enlighten them to use automobiles that respond to this.
Second, I would invite them to get more ideas and do output on recycling used materials that can be found in their garbage.