Timeline of the collapse of the soviet union 1985- perestroika and glasnost becomes soviet policy 1989- 1989- berlin wall opens 1991- soviet union ends what event should be placed in the blank? a) warsaw pact dissolved b) hungary leaves the warsaw pact c) baltic states become independent d) soviet union leaves afghanistan after 10 years eliminate

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

google it

explanation:

a causal relation between two events exists if the occurrence of the first causes the other. the first event is called the cause and the second event is called the effect. a correlation between two variables does not imply causation.

explanation: