Scientific investigations must be well to be sure the data collected will help answer the scientist's question.

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil. 

You should never redesign your experiment. try and see what in your experiment you made a mistake on or try and test your experimemt with somebody else. see if they get the right results.

Yes yes yes very good

The mesophyll chloroplast and thylakoids