The y-shaped region in eastern africa that was created by a series of faults and that includes volcanic mountains, lakes, and waterfalls, is known as
a.
the great rift valley
b.
the sahel
c.
the central plateau
d.
madagascar

The correct answer is A. the Great Rift Valley.

Explanation:

It is said that The Great Rift Valley has a total extension of 6,000 kilometers that is around 3,700 miles. And it goes from Mozambique in southeastern Africa to Beqaa Valley in Lebanon in Asia. Scientists have found that the rifts in the Great Rift Valley were formed approximately 35 million years ago.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.