Go to the Quizzes Page Changing Ecosystems 0% 840 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 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. 2 / 20 What type of succession is shown in the image? Community Succession Primary Succession Secondary Succession Aquatic Succession 3 / 20 Which of the following statements about ecological succession are TRUE? Ecological succession is a process of quick changes in ecosystems. Ecological succession only occurs in water ecosystems. Ecological succession takes place in both land and water ecosystems. Ecological succession in an ecosystem takes place slowly over time. 4 / 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 increased availability to energy resources loss of habitats improved air and water quality 5 / 20 What is the original cause of eutrophication? Too many predators Excess fertilizer Too many herbivores Too much oxygen 6 / 20 Any species that occurs outside its native range as a result of deliberate or accidental introduction by humans. Keystone species Non native species Native species Invasive species 7 / 20 The Final stage of ecological succession is... Climax Community Pioneer Community Mature Tree Growth 8 / 20 An organism that establishes itself outside of its natural range and begins to harm the environment. Extinct species Keystone species Non native species Invasive species 9 / 20 What type of succession does the image show? Aquatic Succession Ecosystem Succession Secondary Succession Primary Succession 10 / 20 Why does primary succession take longer to reach climax community? Because trees do not perform photosyntheses. Because primary succession already has soil Because primary succession does not have soil Because climax community is in a forrest. 11 / 20 Which of the following would count as a disruption to an ecosystem? Invasive species Change in temperature All of the Above Natural disaster 12 / 20 What is the difference between primary and secondary succession? Primary has soil and secondary does not soil is present in both Primary succession already has soil. primary has no soil and secondary has soil 13 / 20 Pollution can cause harm to the ___________. water all of the above air land 14 / 20 Why do the populations of invasive species grow so quickly? They have no food in their new ecosystem. They are prey to many animals. Invasive species have no natural predators. 15 / 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 16 / 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 17 / 20 As you remove resources from an ecosystem, what happens to the population of an organism? It stays the same It increases It increases then decreases It decreases 18 / 20 The sea lamprey is a risk to native fish because: It is ruining beaches. The lamprey causes no risk to native fish. It attaches to the body and sucks the blood from the fish. It eats the alage the fish need. 19 / 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. 20 / 20 A climax community is …. an area that reaches its greatest growing potential. the rocks in a new environment. the fire that will cause destruction. the beginning of a new ecological succession. Your score is 0% Restart quiz Go to the Quizzes Page