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Biology

Visual Connection Questions

BiologyVisual Connection Questions
1.

Figure 46.8 Why do you think the value for gross productivity of the primary producers is the same as the value for total heat and respiration (20,810 kcal/m2/yr)?

2.

Figure 46.10 Pyramids depicting the number of organisms or biomass may be inverted, upright, or even diamond-shaped. Energy pyramids, however, are always upright. Why?

3.

Figure 46.17 Which of the following statements about the nitrogen cycle is false?

  1. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+).
  2. Denitrification by bacteria converts nitrates (NO3−) to nitrogen gas (N2).
  3. Nitrification by bacteria converts nitrates (NO3−) to nitrites (NO2−).
  4. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
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