The colonists had problems with taxation without representation is because they had no say in the matter. They would pay the taxes but Europe made the decisions with the money. Not any of the colonists could make the Decision of we need new roads, schools, etc.
Answer:
The "grave danger" that the author is talking about is the danger of atomic weaponry
Explanation:
"Preliminary Statement of the Association of Manhattan District Scientists" was a 100-page report written after the atomic bombings in Hiroshima and Nagasaki.
The "grave danger" that the scientist is talking about in the article is the dangers of atomic weaponry. The article talks about the consequences that wrong decisions of leaders may have on its nations.
DNA Sequencing is the process of determining the sequence in which the nucleotide bases.