Analysis:

1. describe the relationship between the size of the sandpaper and the weathering of the cubes?

2. what type of weathering does the shaking represent?

3. which sandpaper was most effective in breaking down the sugar cubes the fastest and why?

4. what would happen if you shook the jar harder? longer? why?

5. where might you see a similar type of weathering in nature?

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.

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. 

3. is true i think i should be right