The effects of natural selection are generally seen most quickly in which organisms? Bacteria
Corn plants
Humans
Cats​

Bacteria

Step-by-step explanation:

Bacteria, because they reproduce at fast rates the characteristics of the change and the emergence of antibiotic resistance is what causes the natural selection process to emerge at a high rate.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

75

step-by-step explanation: