ROUND-UP 1 Choose the right option. Ecology is a science that ________________________________ a. has no practical applications in everyday life b. has a limited field of application c. needs no contribution from other sciences d. is multidisciplinary An ecosystem ________________________________ a. can be of any size b. is not affected by relations between individuals of the same species c. can only be terrestrial d. is not part of a biome Pollution ________________________________ a. became a serious problem during the French Revolution b. became an important issue in the early 20th century c. occurs only in cities because of the large number of cars d. has never caused an environmental disaster Climate change ________________________________ a. will have serious social, economic and political consequences b. is not connected to global warming c. has never been studied d. has become a matter of concern since the 1930s Nuclear energy ________________________________ a. has no disadvantages b. produces waste which is dangerous to deal with c. is a valid alternative to fossil fuels d. produces toxic gases Hydrogen is ________________________________ a. polluting b. largely used c. difficult to store and distribute d. not good for vehicles 2 Answer the following questions. What are the objectives of ecological studies? ............................................................................................................................................... How can ecosystems be roughly divided? ............................................................................................................................................... What are the main forms of environmental pollution? ............................................................................................................................................... What long-term effects can global climate change lead to? ............................................................................................................................................... What are non-renewable energy sources? ............................................................................................................................................... What energy sources can be considered 'environmentally-friendly'? Why? ...............................................................................................................................................