I can only answer #8 and the answer is E
Answer:
Advantages
No air pollution.
Once you've built the technology, it's free.
It needs no fuel and is totally renewable.
Tides are totally predictable and reliable.
Offshore turbines have low environmental impact.
Disadvantages
.
Barrages are expensive to build.
Barrages have high environmental impact,
much like hydroelectric dams.
It only provides power about 10 hours each day,
when the tide is moving in or out.
It is limited to coastal areas.
It must be able to withstand storms.
For more information go to http://home.clara.net/darvill/altenerg/tidalquiz.htm
IN FOCUS GROUP DISCUSSION, the moderator perform a passive role in the discussion.
The effectiveness of a moderator is very important for the success of any focus group discussion. The major role of the moderator is to keep the discussion focused and to generate lively and productive discussion. The moderator keeps the discussion on track but does not influence the discussion in any way, his role in the discussion is a passive one.
Answer: the industrial revolution was a turning point in history because its medical advancements improved health in the medical world, life expectancy, and the spread of disease. without any one of these, there would still be disease and ill-health throughout the world.