In the context of the phosphorous cycle, which of the following processes is indicated by arrow ac? A. Erosion B. Convection O C. Transpiration D. Evaporation E. Nitrogen fixation

Which of the following organisms improves nitrogen status in legumes? Select one: a. Nitrate reductase b. Rhizobium c. Glutathione d. Mycorrhizae e. Pseudomonas

After prairie grassland is plowed, what explains the observed large release of carbon dioxide out of the soil and back into the atmosphere?

Which of the following is true regarding plants and the nitrogen cycle?   a. Nitrogen is a micronutrient   b. Nitrogen is used for regulation of ion channels   c. None of the above are true   d. Nitrogen gas is fixed directly by plants   e. Plants use fungi to fix nitrogen

... Bacteria that grew in the bottom of nutrient broth tube is: a. Anaerobic A b. Flocculent c. Pellicle d. Sediment Reply...

Explain this in simple terms and de

Which nitrogen flux is incorrectly described? O nitrification is the conversion of ammonium to nitrates nitrogen mineralization is the conversion of organic nitrogen to inorganic nitrogen nitrogen immo bilization is the conversion of ammonium to metamorphic rock O denitrification is the conversion of nitrate to nitrogen gas O nitrogen fixation is the conversion of nitrogen gas to bioavailable forms of nitrogen

23. Ecological stability is the result of _______________, the tendency of a system not to change when disturbed,     and _________________, the ability of the system to recover.     24.  Which of the following is NOT a limiting factor in primary production?   Question 24 options:   A)  Red light   B)  Oxygen   C)  Micronutrients   D)  Water

1. Briefly describe how the following processes influence nutrient cycling? a. Photosynthesis b. Decomposition c. Respiration

Which of these occurs through symbiotic nitrogen fixation? a. The plant benefits from using an endless source of nitrogen. b. The soil benefits from being naturally fertilized. c. Bacteria benefit from using photosynthates from the plant. d. All of the above occur.