The pedigree shows shaded individuals who display the trait for brown eyes which is dominant (B) over blue which is recessive (b). What is the genotype of the mother in this
pedigree:

let be B brown and b be blue

in 1st generation the trait will be BB Bb Bb and bb which means genotype ratio will be 1:2:1.

poison levels are being represented and it show how much poison the producer has and how much the consumer has   and damage the organisms in it, particularly in the predators at the end of the chain. this is because accumulating compounds cannot be excreted.

genetic variation will increase because of a new habitat and food source.

explanation: