Nitrogen is a key component of DNA, forming part of the nucleotides that make up the genetic code.

25.00 has 4 significant figures due to the trailing zeros after the decimal.

The number 100 has only 1 significant figure unless specified otherwise.

0.00560 has 3 significant figures, 0.0560 has 3 significant figures, 0.560 has 3 significant figures, and 5.60 has 3 significant figures. However, 0.00560 is the smallest number, but all have the same count of significant figures.

7.890 x 10^3 has 4 significant figures, while the others have 3, 3, and 4 respectively, but the leading zeros in the first and last options do not count.

0.0300 has three significant figures (the zeros after the 3 are significant because they come after a decimal point).

12 is a factor of 48, as 48 divided by 12 equals 4, which is an integer.

12 is the smallest number that is a multiple of both 4 and 6.

The LCM of 8 and 12 is 24, which is a multiple of both.

25 is a perfect square (5^2).

121 is divisible by 11, as 121 = 11 x 11.

A number is divisible by 15 if it is divisible by both 3 and 5. 30 meets both criteria.

A number is divisible by 8 if the last three digits form a number that is divisible by 8. 64 is divisible by 8.

7 is not a factor of 60, as 60 cannot be divided evenly by 7.

35 is not a multiple of 6, while 18, 24, and 30 are all multiples of 6.

55 is not divisible by 12, as it does not meet the criteria of being divisible by both 3 and 4.

A number is divisible by 3 if the sum of its digits is divisible by 3. The sum of the digits of 22 (2 + 2 = 4) is not divisible by 3.

40 is not divisible by 7, while 21, 28, and 35 are all multiples of 7.

A number is divisible by 8 if the number formed by its last three digits is divisible by 8. 90 is not divisible by 8.

A number is divisible by 9 if the sum of its digits is divisible by 9. The sum of the digits of 50 (5 + 0 = 5) is not divisible by 9.

In decimal, '54' = 32, '45' = 29, '63' = 39, '36' = 22. '63' is the largest.

'72' in base-8 is 58 in decimal, which is larger than the others.

0.75 is greater than 0.5, 1/3 (0.333), and 0.25.

In the operation 3.00 x 4.0, 3.00 has three significant figures and 4.0 has two. The result will have two significant figures, which is the least among the options.

The context suggests that research findings often lead to the conclusion that further studies are necessary, making option 2 the best completion.

The sentence suggests a contrast, indicating that while there are benefits, there are also drawbacks such as reduced personal interactions.

The passage indicates that wealth often determines access to quality education, establishing a direct influence.

The context indicates that the workforce is changing significantly, thus 'transformation' is the most appropriate choice.

The set of all integers greater than 10 is a clear example of a constraint-based set, as it imposes a specific condition on the elements.

The passage outlines the events in the order of Event A, followed by Event B, and then Event C, making option 0 the correct sequence.