Describe what scientists discovered when they studied "dancing animals." What ability do all dancing animals have in common? Explain the difference between innate behavior and learned behavior. Support your answer with information from the lesson.

european union policies. the eu's long-term objective is to achieve levels of air quality that do not result in unacceptable impacts on, and risks to, human health and the environment. eu policies aim to reduce exposure to air pollution by reducing emissions and setting limits and target values for air quality.

the main environmental problems in western europe were: energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. many environmental problems are common to most european countries.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;