in the earth's atmosphere is made up about approximately 78 percent nitrogen and 21 percent oxygen.
The retina; I may be wrong.
Chesapeake bay is an area that has suffered from overharvesting and eutrophication. Eutrophication is an enrichment of water by nutrients salts that causes structural changes in the ecosystem such as increased formation of algae and aquatic plants, depletion of fish species among other effects. The greatest source of nitrogen and phosphorus in a Chesapeake bay is agriculture
Answer:
An iron rod used for beating down the earthy substance in tamping for blasting.
