34. We are not able to stop the continuedof the environment. a) dereliction b) detention c) degradation d) implication 35. Human on the environment makes it less rich and less diverse. a) activity b) injury c) hit d) impact 36. One of environmental problems have been caused by too rapid a use of a) resources b) biodiversity C) ecosystem d) vegetation 37. The mother bird protects her eggs from a) ecologist b) predators c) preys d) fungi 38. Standing water such as a pond or a lake belongs to ecosystems. a) lotic b) lentic c) natural d) aquatic 39. People in cities breathe as a result many of them develop breathing problems a) exhaust fumes b) greenhouse gases c) ozone layer d) air 40. More trees should be planted in urban areas to have more a) timber b) carbon dioxide c) oxygen d) air