What are trophic levels?

I need an easy definition

Please help

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

Awire-hair terrier and a smooth-hair terrier are mated. the offspring produced are 6 wire-hair puppies and 2 smooth-hair puppies. a. what pattern of inheritance best describes this situation? b. what is the genotype(s) of the wire-haired puppies? of the smooth-haired puppies? c. what would be the expected genotype and phenotype ratios of a mating between 2 wire-haired terriers that are heterozygous?

Which is the most likely reason the writer of the play pygmalion chose to change the character of galatea from a statue to working-class woman?