QUESTION 19 The physical home of a species is its QUESTION 20 Natural population
ID: 280028 • Letter: Q
Question
QUESTION 19 The physical home of a species is its QUESTION 20 Natural populations cannot exceed their carrying capacities. True or False? O True O False QUESTION 21 A small country begins to experience stable economic prosperity after centuries of extreme poverty. The government uses the citizens. A social security system is established to support elderly members of the population. What demographic changes would you expect to see? O No changes in the population O Earlier childbearing and many more children per woman, with a decrease in the number of elderly people O Reproductive rates far below replacement-level fertility O A decrease in the number of deaths and an increase in the number of births and delayed childbearing O Large numbers of elderly people and no children QUESTION 22 The concept that two species cannot occupy the same ecological niche at the same time is called O predation. O coevolution. O mutualism. O the competitive exclusion principle. QUESTION 23 Populations that have been relatively undisturbed by humans normally grow, with no limits set by their environments. True or False? O True O False QUESTION 24 In the rain forests of Panama, scientists found a colony of tree -dwelling black ants where some individuals had red abdomens. When examined, the scientists determined that the ants with red abdomens were infected with roundworm eggs. Birds would prey on these ants, mistaking their red bellies for berries. In the interactions among the tree-dwelling black ants, the roundworms, and the birds, the roundworms are the O predators O parasites. O hosls. O mutualists. O prey QUESTION 25 The human population currently shows a J-curve growth pattern. True or False? O True O FalseExplanation / Answer
19. Habitats. Habitat is the natural environment in which a particular species of organism lives.
20. False. Carrying capacity is the average maximum population favored by environments. The population can go beyond this limit but the number of individuals will begin to decrease beyond carrying capicity.
21. Option 4th is correct. A social health care will decrease the number of death and proper education will results in delayed childbearing.
22. Option last is the correct answer. According to competitive exclusion principle two species cannot occupy same niche at the same time because of competition for resources.
23. False. Environment has its own limit.
24. Option 2nd is the correct answer. Here worm is parasite for ants and ants are pray for birds.
25. True.