A physician who specializes in treatment of the gums is called a periodontist.
Answer:
Mule is produced from a hybrid cross.
Explanation:
A mule is the offspring which is produced by crossing or mating of male donkey with female horse.
Where the male donkey is called Jack and female horse is called mare.
The offspring produced as a result is Mule.
The gender of Mules may be male or female but consists of 63 chromosomes.
But such produced Mules are sterile.
I agree because an ecosystem and a host are basically the same thing.
TT or Tt because even though the second letter is not dominant the first one is greater
