Start from question 4 with chronic hunger and poor nutrition, which threatens th

Question

Start from question 4 with chronic hunger and poor nutrition, which threatens their ability to lead healthy and . mdr productive lives is called ods sel baa a. food insecurity b. chronic undemutrition. c. chronic malnutrition. d. none of the above. sdí )o gainnigod ydasal as.iu bvladgla ??1, v1rris has , dluhis, nn.tr 13. The five basic types of interactions between species are a. interspecific competition, parasitism, predation, mutualism and commensalism. b. parasitism, predation, mutualism, logistic growth and commensalism. c. predation, mutualism, commensalism, exponential growth and resource partitioning. d. competitive exclusion, parasitism, predation, mutualism and abiotic factors. 14. Deforestation is temporary or permanent removal of large expanses of forest for agricu ture, settlements or other uses a. Truc. b. False. S. A gradual change in species composition in a given area is called b. resilience. c. ecological succession. d. population change. 16. Advantages of genctically modified crops and foods is(are) a b. c. d. need less fertilizer and water. unpredictable genetic and ecological effects. lower genetic diversity none of the above 17....... is a mixture of clay, sand, water, and a combustible organic matcrial called bitumen, i.e, a thick sticky, tar-like heavy oil with a high sulfur content. a. Fossil fuel b. Tar sand c. Coal. d. none of the above lin 18. The methods of more sustainable forestry include a. putting tree plantations only on deforested and degraded land b. sharply reducing road building in uncut forest areas l c. certifying timber grown by sustainable methods d. all of the above 19. Lakes that have a small supply of plant nutrients are ealled a. oligotrophic lakes. b. mesotrophic lakes. c. cutrophic lakes. d. cultural eutrophication.

Explanation / Answer

12. Living with chronic hunger and poor nutrition is called chronic malnutrition. It hampers the growth and ability to lead a productive life.

13. The intercations between the organisms have a effect on each other. The five basic types of interactions among species are: interspecific competition, parasitism, predation, mutualism, commensalism. The correct answer is option a.

14. Deforestation is the process of permanently(not temporary) cutting down of trees for agricultural and settlement purpose. So the statement is false.

15. The gradual change in the composition of species is called the ecological succession. Some species grow in numbers, while the other species decreases in number.

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