Mars (diameter 6790 kilometers) is only slightly more than half the size of Earth (diameter 12750 kilometers).
The growth of los angeles increses the amount of pollution/runoff into the owens river vally
Answer:
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need.
Reasons
1) the lack of an effective central government means there is nowhere for the somali people to turn for aid
2) the country dry climate makes it nearly impossible to grow enough food to feed all of the somali people
3) constant clan warfare deprive the somali people of the goods and services they need to acquire the basic necessities for life
