Helpp! the key to understanding how dna works is
A- to understand that each base only connects to another specific base.
B- to understand more about the sugar in each nucleotide.
C- to understand that it looks like a twisted ladder that spirals around.
D- to understand the role of the phosphate in each nucleotide.

Explanation:

to understand that each base only connects to another specific base.

According to the passage, “The secret of DNA, or what Crick called 'the secret of life,' is that every A molecule on one side of the rung always connects to a T on the other side, while every G molecule connects to a C.”

answer: "circumcision is a common procedure in which the skin covering the tip of the penis is surgically removed."

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.