For questions 16–19, write true if the statement is true. if the statement is false, replace
the underlined word or words to make the statement true. write your changes on the line. 16. most oil pollution in the oceans comes from small, nonpoint
sources. 17. marine organisms at higher trophic levels contain higher levels of
mercury. 18. of the nutrients phosphorus and nitrogen, phosphorous causes
the most damage to oceans. 19. reducing oil seepage into coastal waters can lessen the frequency
of algal blooms.

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explanation: bc blah

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.