Go to the Quizzes Page Changing Ecosystems 0% 842 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 What does the term dynamic equilibrium mean? A balanced ecosystem that stays the same without any changes. An unbalanced ecosystem in which the parts constantly change. A changing ecosystem that cannot be balanced because of change. An overall balance between the different parts of an ecosystem although the parts constantly change. 2 / 20 Which of the following statements about ecological succession are TRUE? Ecological succession in an ecosystem takes place slowly over time. Ecological succession takes place in both land and water ecosystems. Ecological succession is a process of quick changes in ecosystems. Ecological succession only occurs in water 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: Parasitism between kudzu and the native plants A predator prey relationship between ground plants and kudzu Commesalism occurring between the kudzo and native plants Competition occurring between the native and invasive species 4 / 20 Humans extract resources from nature such as coal, oil, and water.What are some likely problems caused by resource extraction? improved air and water quality loss of habitats increased availability to energy resources increasing amounts of pollution 5 / 20 What type of succession does the image show? Primary Succession Ecosystem Succession Secondary Succession Aquatic Succession 6 / 20 Which of the following would count as a disruption to an ecosystem? All of the Above Natural disaster Change in temperature Invasive species 7 / 20 What is the original cause of eutrophication? Too much oxygen Too many predators Excess fertilizer Too many herbivores 8 / 20 What happens when humans cut down forests to build shopping malls? New animals species form and plants produce more oxygen. The shopping mall reduces the amount of pollution in the area. Plants and animals thrive in the new environment and pollution decreases. Habitat is altered, plants and animals destroyed, and pollution increases. 9 / 20 The Final stage of ecological succession is... Pioneer Community Mature Tree Growth Climax Community 10 / 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 11 / 20 Why do the populations of invasive species grow so quickly? They are prey to many animals. They have no food in their new ecosystem. Invasive species have no natural predators. 12 / 20 What is the difference between primary and secondary succession? Primary succession already has soil. primary has no soil and secondary has soil Primary has soil and secondary does not soil is present in both 13 / 20 The sea lamprey is a risk to native fish because: It attaches to the body and sucks the blood from the fish. It is ruining beaches. It eats the alage the fish need. The lamprey causes no risk to native fish. 14 / 20 What type of succession is shown in the image? Primary Succession Community Succession Aquatic Succession Secondary Succession 15 / 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 16 / 20 Pollution can cause harm to the ___________. all of the above land water air 17 / 20 An organism that establishes itself outside of its natural range and begins to harm the environment. Keystone species Extinct species Non native species Invasive species 18 / 20 A climax community is …. the fire that will cause destruction. an area that reaches its greatest growing potential. the rocks in a new environment. the beginning of a new ecological succession. 19 / 20 As you remove resources from an ecosystem, what happens to the population of an organism? It decreases It increases It increases then decreases It stays the same 20 / 20 Any species that occurs outside its native range as a result of deliberate or accidental introduction by humans. Invasive species Non native species Keystone species Native species Your score is 0% Restart quiz Go to the Quizzes Page