Certain characteristic demographic features of developing countries are.
1. High fertility, high density, rapidly rising mortality rate and a very young age distribution.
2. High infant mortality, low fertility, uneven population growth and a very young age distribution.
3. High mortality, high density, uneven population growth and a very old age distribution.
4. High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution.
What type of human population is represented by the following age pyramid?
1. Expanding population
2. Vanishing population
3. Stable population
4. Declining population
Consider the following statements (A)-(D) each with one or two blanks:
(A) | Bears go into ________ (1) _ during winter to ________ (2) _ cold weather. |
(B) | A conical age pyramid with a broad base represents _________ (3) human population. |
(C) | A wasp pollinating a fig flower is an example of ________ (4) _ . |
(D) | An area with high levels of species richness is known as _________ (5) . |
Which of the following options, gives the correct fill-ups for the respective blank numbers from(1) to (5) in the statements?
1. | (1) - hibernation, (2) - escape, 3) - expanding, (5) - hot spot |
2. | (3) - stable, (4) - commensalism, (5) - marsh |
3. | (1) - aestivation, (2) - escape, (3) - stable, (4) - mutualism |
4. | (3) - expanding, (4) - commensalism, (5) - biodiversity park |