Global tropical rainforests are most associated with which part of the Hadley Cells?

Mycorrhizal fungi (check all that apply):

Briefly describe the flow of water through a loam from a furrow on the soil’s surface to an underlying clay layer. What happens to the water flow when it reaches the clay layer? Contrast this with what happens when the water encounters an underlying sand layer. If a pollutant were to be on the surface of the two soil profiles described above (loam with underlying clay versus loam with underlying sand layer), which would pose the greatest danger to groundwater? No more than 5 or 6 sentences!!

Of the following soil types, water storage is greatest in:

Exposure to some soil microorganisms may suppress immunity-related disorders.

Crohn’s Disease may be caused by:

Which of the following are true for the links between soils and human health?

“Water scarcity” is defined by the UN as being solely dependent on availability for human consumption, and not environmental consumption.

Define the Hygiene Hypothesis. Be brief…just a few sentences.

Which of the following is (or are) NOT true of bioavailability (select all that apply):