One of Einstein's major contributions to the study of physics was his theory of .

Einstein's theories argued that the knowledge acquired through
was not always accurate.

In introducing his theories involving
, Freud tried to explain human behavior and emotion.

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.

the awnser is d i think

no moderator inbox me? ?