As a scientist, inventor and engineer, Leonardo da Vinci used a methodical approach to study topics, including a. built and tested many designs of his engineering inventions.
b. drew precise illustrations with detailed descriptions about the subject.
c. relied on others’ inventions and improved upon them.
d. brainstorming on the topic and conducting one test.

answer; william penn's approach made the colony diverse by attracting many types of people and religions;

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.

chemicals that are toxic to plants