Go to the Quizzes Page Changing Ecosystems 0% 840 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 Which of the following are ways humans can cause the loss of biodiversity within an ecosystem? All of the Above Pollution Over-fishing / Over-hunting Habitat destruction 2 / 20 Which of the following statements about ecological succession are TRUE? Ecological succession takes place in both land and water ecosystems. Ecological succession only occurs in water ecosystems. Ecological succession in an ecosystem takes place slowly over time. Ecological succession is a process of quick changes in ecosystems. 3 / 20 Kudzu has overgrown many parts of the southern and eastern US and native ground plants have disappeared from the area. This is an example of: Competition occurring between the native and invasive species Parasitism between kudzu and the native plants A predator prey relationship between ground plants and kudzu Commesalism occurring between the kudzo and native plants 4 / 20 Which of the following would count as a disruption to an ecosystem? Change in temperature Invasive species Natural disaster All of the Above 5 / 20 An organism that establishes itself outside of its natural range and begins to harm the environment. Non native species Extinct species Invasive species Keystone species 6 / 20 What type of succession is shown in the image? Aquatic Succession Community Succession Primary Succession Secondary Succession 7 / 20 What happens when humans cut down forests to build shopping malls? The shopping mall reduces the amount of pollution in the area. Habitat is altered, plants and animals destroyed, and pollution increases. Plants and animals thrive in the new environment and pollution decreases. New animals species form and plants produce more oxygen. 8 / 20 What type of succession does the image show? Secondary Succession Ecosystem Succession Primary Succession Aquatic Succession 9 / 20 The Final stage of ecological succession is... Mature Tree Growth Climax Community Pioneer Community 10 / 20 What is the difference between primary and secondary succession? Primary succession already has soil. Primary has soil and secondary does not primary has no soil and secondary has soil soil is present in both 11 / 20 Why does primary succession take longer to reach climax community? Because primary succession already has soil Because trees do not perform photosyntheses. Because climax community is in a forrest. Because primary succession does not have soil 12 / 20 What is the original cause of eutrophication? Too many herbivores Too much oxygen Too many predators Excess fertilizer 13 / 20 What does the term dynamic equilibrium mean? An overall balance between the different parts of an ecosystem although the parts constantly change. A balanced ecosystem that stays the same without any changes. A changing ecosystem that cannot be balanced because of change. An unbalanced ecosystem in which the parts constantly change. 14 / 20 Humans extract resources from nature such as coal, oil, and water.What are some likely problems caused by resource extraction? increasing amounts of pollution loss of habitats improved air and water quality increased availability to energy resources 15 / 20 A climax community is …. the beginning of a new ecological succession. an area that reaches its greatest growing potential. the fire that will cause destruction. the rocks in a new environment. 16 / 20 As you remove resources from an ecosystem, what happens to the population of an organism? It stays the same It decreases It increases It increases then decreases 17 / 20 Pollution can cause harm to the ___________. all of the above land water air 18 / 20 Any species that occurs outside its native range as a result of deliberate or accidental introduction by humans. Native species Keystone species Non native species Invasive species 19 / 20 The sea lamprey is a risk to native fish because: The lamprey causes no risk to native fish. It is ruining beaches. It eats the alage the fish need. It attaches to the body and sucks the blood from the fish. 20 / 20 Why do the populations of invasive species grow so quickly? Invasive species have no natural predators. They have no food in their new ecosystem. They are prey to many animals. Your score is 0% Restart quiz Go to the Quizzes Page