Midterm Exam

In the nitrogen cycle, the process where ammonia (NH3) is converted into nitrites (NO2) and nitrates (NO3) is called:

• Nitrification
• Nitrogen Fixation
• Denitrification
• Producer Uptake

Which of the following processes is shown by arrow 2 in the image below?

• Nitrification
• Nitrogen Fixation/Ammonification
• Denitrification
• Producer Uptake

Which of the following processes is shown by number 5 in the image below?

• Ammonia (NH3)
• Atmospheric Nitrogen (N2)
• Nitric Oxide (NO)
• Nitrite (NO2) and Nitrate (NO3)

Which of the following processes is shown by arrow 3 in the image below?

• Producer Uptake
• Weathering
• Decomposition
• Runoff/Leeching

Which of the following processes is shown by arrow 1 in the image below?

• Producer Uptake
• Weathering
• Decomposition
• Runoff/Leeching

Which of the following processes is shown by arrow 2 in the image below?

• Photosynthesis
• Gas Exchange
• Cellular Respiration
• Combustion

Which of the following processes is shown by arrow 4 in the image below?

• Decomposition
• Nutrition/Feeding
• Cellular Respiration
• Combustion

Which arrow in the image below shows the following process: Gas Exchange

• 3
• 5
• 6
• 7

This is released by the weathering of rocks.

• Phosphorus
• Water
• Nitrogen
• Carbon

Why is excess fertilizer bad for aquatic ecosystems?

• algal blooms are created which blocks out sunlight
• without sunlight aquatic plants stop photosynthesis and don't produce oxygen
• fish and other aquatic organisms are deprived of oxygen and die
• All of the answer choices