Both are unicellular.
ecoli and paramecium are both unicellular and that is the only common characteristic. E.coli is a prokaryotic unicellular organism where paramecium is a eukaryotic unicellular organism. paramecium has a nucleus and ecoli has a nucleoid neither of them produce essential vitamins. contractive vacuoles are present only in paramecium.
The ph . this affects it because the more ph there is the more enriched the soil is. it fluctuates according to environmental factors e.g acid rain
The number of protons in an atoms nucleus is called the atomic number.
They can have a child with straight hairline even though they posses the dominant phenotype only if the genotype is heterozygous.