C. grass
is the answer because it provides food for other organisms
Epigeal germination is a botanical term indicating that the germination of a plant takes place above the ground. An example of a plant with epigeal germination is the common bean (Phaseolus vulgaris). The opposite of epigeal is hypogeal (underground germination).
I'm not entirely sure why holistic treatments would be controversial in
animals. Perhaps what makes them controversial is the fact that we tend
to assume we know what makes them holistic and how they will be holistic
for the animal - this isn't necessarily the case, as we can only make a
good guess about it.
Pathogens can be bacteria, viruses, fungi, or protists. One common disease caused by a fungus is attlethes foot. Hope this can help you! :D