1 If the ball hits the ceiling it is called out of bounds in international volleyball. 2  Some leagues allow play continue after ball hits the ceiling. 3  If a player commits a fault or violation when playing the ball. 4  To read more details about the faults and violations, go to basic volleyball rules pages.
Environmental impacts. Hydropower is emission-free, renewable energy which does not cause any emissions into the air, water, or soil. The construction of hydropower plants changes waterways and their natural conditions.The main environmental impact during production is caused by the regulation of the waterways.Fortum actively moderates this environmental impact.ortum moderates the environmental impact in many ways. Fortum actively moderates the environmental impact of hydropower production in areas affected by the power economy. The impact on the fishing industry is reduced by stocking fish and restoring habitats.
Dams are built all over the world to control floods, store water and for the generation of electricity. Until now some 800,000 dams have been constructed worldwide. However, many negative effects of large hydroelectric dams have come to light, slowing the progression of future dams. Farmers downstream who used to wait for the flooding of the fields to plant their seeds are affected. 2  Dams serve as a heat sink, and the water is hotter than the normal river water. 3  This warm water when released into the river downstream can affect animal life.