What is one industrial practice that has contributed to pollution in europe?
a. strict laws about industrial pollution
c. burning clean coal in factories
b. a lack of pollution controls in eastern europe before 1989
d. all of the above

b. a lack of pollution controls in Eastern Europe before 1989

Explanation:

   Agriculture is the main water user in the Mediterranean countries, mainly for irrigation. Irrigated land area and irrigation water abstraction have been steadily increasing since 1980. In southern European countries, 60% of the water abstraction is used for irrigation. In some regions, groundwater abstraction is higher than the recharge rate, which causes the groundwater level to fall, wetland loss and saline intrusion. Instruments to limit future water demand include improving water use efficiency, controlling water use through pricing, and changes in agricultural policy.

    Notwithstanding the introduction of water quality objectives in the EU and the focus on water quality in the Central and Eastern European Environment Action Program, there has been no overall improvement in river quality since 1989/90. . European countries report the existence of several trends without any consistent geographical pattern. However, there have been some improvements in the most severely polluted rivers since the 1970s.