01/Choose the correct answer 5- Aggregate more workability is. b) Rounded 6. laitance will be formed with b) segregation 7- shape an texture of aggregate effect on b) workability 8- the of the aggregate and the hydrated a) roughness b) hydration of cement 5-Bleeding is decreased by a) increase b) flaky c) elongated d) angular e) all of them. b) bleeding C) setting d) all of them ........ b) strength of concrete c) both c) interlocking the fineness of cement c) not effect d) all of them b) decrease

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Environmental Consequences of Fossil Fuel Use

Fossil fuels are organic materials found inside the earth's surface. They are mainly composed of dead remains of plants and animals. The primary component constituents of fossil fuels are carbon and hydrogen, which are usually burnt to produce energy. Fossil fuels are believed to be formed millions of years ago when dead remains of animals and plants were subjected to high heat and pressure.