Answer:
homologous, high levels of, natural selection
Answer:
third and fourth trophic levels
Explanation:
A MYSTERIOUS ailment has been devastating the much studied lions of the Serengeti National Park in Tanzania, and scientists said yesterday that it had been identified as canine distemper, a viral disease that causes severe neurological symptoms and death.

The fundamental unit among them (not derived) is :
Fungi because of the rotting and in moist places