Which of the following factors is both a physical and a chemical agent of rock weathering?
Temperature
Animal
Water
Oxygen
Correct answer is C
No explanation has been provided for this answer.
High temperature and pressure convert sandstone to
Basalt
Quartzite
Coal
Limestone
Correct answer is B
No explanation has been provided for this answer.
Which of the following groups of crops grow best in the savanna zones of West Africa?
Cotton, millet and groundnut
Cocoa, kola and oil palm
Cotton, cocoa and guinea corn
Banana, rubber and millet
Correct answer is A
No explanation has been provided for this answer.
The removal of top soil from a small area of soil surface due to the impact of raindrops is known as
Sheet erosion
Rill erosion
Gully erosion
Splash erosion
Correct answer is A
No explanation has been provided for this answer.
The biotic factor which derives much benefit from livestock and reduces productivity is a
Predator
Parasite
Pathogen
Microbe
Correct answer is B
No explanation has been provided for this answer.