Homozygous being (TT): 50%
Heterozygous being (Tt): 50%
Hetero- different
Homo- the same
Just as they do in most ecosystems, decomposers feed off of dead or decaying matter, recycling it back into the ecosystem for plants to receive essential nutrients and to.. basically, de-clutter the world.
The correct answer should be the Periderm.
It is not as simple as this, of course and you would be wise to know that periderm is just a part of the overall concept that is bark, because bark is not a biological term.
C. a green parrot has an allele for green feathers and an allele for blue feathers.