Plants that grow submerged of floating in water bodies are known as?

A. hydrophytes

B. hygrophytes

C. mesophytes

D. xerophytes

Vegetation regeneration on a fallow land is typical example of?

A. nature conservation

B. secondary succession

C. reafforestation

D. forest reservation

Which of the following is used to describe soil reaction?

A. pH

B. cation exchange

C. clay content

D. texture

Time, as a factor of soil formation, influences mainly soil?

A. texture

B. organisms

C. nutrients

D. maturity

Which of the following farming practices may be used to check soil erosion?

A. Ploughing of land upslope

B. Contour ploughing

C. Bush burning

D. Shifting cultivation

Which of the following factors has been of particular importance in promoting population growth in developing countries?

A. Rising level of industrial development

B. Improvement in health-care delivery

C. Increase farm yield per hectare

D. Rising standard of education

Which of the following population characteristics is associated with developed countries?

A. Decline birth rate and high death rate

B. High birth rate and declining death rate

C. High birth rate and low death rate

D. Low birth rate and low death rate

World population distribution is characterized by?

A. concentration in the western hemispheres

B. extreme unevenness

C. balanced distribution between the northern and southern hemisphere

D. uniform density in all hemispheres

Villages develop into urban centers when they?

A. attract more people

B. produce enough food

C. establish educational institutions

D. grow in commerce and industry

Which of the following landscapes is mostly likely to promote rural settlement nucleation?

A. Open, flat country

B. Rugged, hilly country

C. Extensive arable land

D. Well-drained plain