Answer:
140 years is average duration of an earthquake.
Explanation:
- The Hayward fault is a geologic fault that is capable of massive destruction and is 119 km long fault western base of hills of San Francisco and is parallel to the San Andreas fault. The occurrence of an earthquake of 6.8 magnitudes in 1868 was biggest earthquake in California history.
- Recently various geologists have taken time interval of the past five large earthquakes and based on the past earthquakes data the interval of 140 years it will take to the formation of a large earthquake.
A diagram contains rectangles that there area is equal to the frequency of variables.
Answer:
D. the elimination of the kraal system
Explanation:
The Maasai tribe of East Africa is an example of a traditional economy. The Maasai tribe typically found in Kenya and Tanzania use livestock such as goats, sheep and cattle as social utility, it serves as the primary source of income.
Some of the events that posed a challenge to the Maasai way of life includes the following;
I. A decline in the lion population because killing a lion symbolizes a rite of passage with respect to the bravery of a warrior.
II. Encroachment of their lands by farmers.
III. The loss of their lands to national parks for recreational purposes.
However, the elimination of the kraal system is not a challenge to the Maasai way of life.
A kraal system was peculiar to the Zulus and it's usually an enclosure that surrounds a livestock. They're typically used as a place for performing sacrifices, act as a homestead for livestock, used as a defense against attack.
