Question

Science question: Which beat summarized the scientific process that led to our current understanding of DNA?

1 each scientist made an important but unrelated contribution
2. Scientists built on the previous work of other scientists to make new discoveries
3 and 4 are too long

Answer 1

the answer is B

Step-by-step explanation:

Answer 2

2

Step-by-step explanation:

in terms of cells, it exists from previous existing cells, that means scientist are built up by the work of other scientist