Answer:
A) The resources used by both species of salamanders are available in limited supply
B) Body size is a heritable trait in salamanders Salamanders that are closer in body sine compete less strongly for food
C) The sympatric salamander populations evolved their present body sizes afterthey became sympatric
D) In sympatric populations, smaller P. Cinereus adults survive better and reproduce more.
All of the above are correct.
Of any moth? Or the peppered moth?
They are known as Teratogens.
These substances are toxic and they harm the embryo. The harm may be psychological, physiological, or even both. They can come in all forms and even include simple things like alcohol which can cause the Fetal Alcohol spectrum disorder, or they can be complex things like radiation.