A layer of very fine wind-deposited sand and silt is known as?
loess
barchan
seif
bajada
Correct answer is A
No explanation has been provided for this answer.
Which of the following pairs of longitudes forms a Great Circle?
60°E and 140°E
40°W and 140°E
20°W and 160°W
10°E and 180°
Correct answer is B
No explanation has been provided for this answer.
Which of the following explains the variation in the lengths of day and night with the seasons?
Earth's rotation on its axis
Earth's revolution along its orbit
The inclination of the earth
the sperical shape of the earth
Correct answer is B
No explanation has been provided for this answer.
On September 23 each year, the earth experiences the?
summer solstice
autumnal equinox
winter solstice
vernal equinox
Correct answer is B
No explanation has been provided for this answer.
Which of the following group of countries constitutes the Chad Basin Commission?
Benin, Niger, Nigeria and Chad
Niger, Nigeria, Chad and Sudan
Cameroon, Libya, Chad and Sudan
Cameroon, Chad, Niger and Nigeria
Correct answer is C
No explanation has been provided for this answer.