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