A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r). Which describes the fruit fly’s genotype and phenotype?

genotype: black eyes
phenotype: Rr
genotype: black eyes
phenotype: rr
genotype: rr
phenotype: black eyes
genotype: Rr
phenotype: black eyes

genotype; (rr)

phenotype; black eyes

Explanation:

phenotype is the physical characteristic of the individual, which is expressed by the genotype.

genotype is the genetic code of the individual

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.