Question

emergent wetlands
percent of earth covered in water
high primary productivity rate in wetlands
means it is referred to as this
dominant plants in this wetland are plants
rooted in soil but emerging from the water
(grasses)
refers to wetlands because they absorb runoff
and slowly release it back into the
environment

Explanation:

The problem is about emergent wetlands, which relates to environmental sciences as it deals with wetland ecosystems, their plant life, productivity, and water - related functions. Environmental Sciences in the Natural Science discipline focuses on the study of ecosystems, environmental processes, and the interactions between organisms and their environment, which aligns with the content about emergent wetlands.

Answer:

The subfield is Environmental Sciences (under Natural Science).