Well it may depend on the environments and what percentage of the endangered animal is actually consuming the endangered plants... Thats just my guess.
the answer to your question is POLLUTION
Capitol letters are the dominant traits and lowercase letters are recessive traits
In a plant species, if the b allele (blue flowers) and the b allele (white flowers) are incompletely dominant (bb is light blue), an all light blue offspring<span> ratio is expected in a cross between a blue-flowered plant and a white-flowered plant.</span>