The answer for your question is B.
Answer:
The amount of data in a multimedia application runs for a few Giga bases and hence storage cost and its processing cost increases. This is one of the disadvantages of using multimedia.
Answer:
I do believe your answer is D: Most of Earth's mantle is always moving.
Hopefully this helped! :D
Fast growing Salmon to me would be a freak of nature. Most likley some idiot put some steriods in the ocean, but also must mean something is happening with where they live and they are trying to adapt to what has happened.