Which of the following statements is true?

Gravity and muscle contractions move food down the esophagus.
The small intestine receives undigested food from the large intestine.
The large intestine absorbs digested food.
Digestion does not start until food is swallowed.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

b is the correct answer

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.