Answer:
A
Explanation:
I'm pretty sure it's A because fish = fish feces which = nutrients.
Answer:
The orbital regions are referred to the otic regions.
Answer:
Explanation:
Ammonia is associated with aquatic animals; urea is associated with most terrestrial and semiterrestrial vertebrates, but rarely land invertebrates (Campbell et al., 1972); and uric acid is the major product of terrestrial invertebrates, birds and reptiles (Prosser & Brown, 1961).