Figure 2-3 
-Refer to Figure 2-3.What do the outer arrows represent in the figure?
Definitions:
Nitrification
A microbial process by which ammonia is converted into nitrate, an important step in the nitrogen cycle.
Ammonium
A positively charged ion (NH4+) formed by the addition of a hydrogen ion to ammonia (NH3).
Nitrates
Salts or esters of nitric acid, containing the NO3- ion, commonly used in fertilizers.
Nitrogenous Compounds
Organic or inorganic compounds containing nitrogen in various chemical forms, important in many biological processes and industrial applications.
Q27: Refer to Figure 2-18. In the ordered
Q68: Refer to Figure 3-10. If Alice produces
Q79: Opportunity cost refers to how many inputs
Q95: Refer to Table 3-27. Huang has an
Q130: Refer to Table 3-28. Barb's opportunity cost
Q175: Refer to Figure 2-3. Which of the
Q204: Refer to Figure 2-22. Is a move
Q329: A pie chart is a way to
Q335: Refer to Figure 2-23. Points A, B,
Q586: Refer to Figure 2-7. Efficient production is