Leroy is writing an article for the school paper entitled "health hazards of excessive computer use." which of these opening lines should he use if he wants to convey the most precise meaning?
a.
according to three recent medical studies, daily computer use of more than 6 consecutive hours can reduce one's visual acuity by as much as 20%.
b.
a number of studies have made a connection between using the computer too much and not being able to focus the eyes clearly.
c.
experts recently claimed that excessive use of the computer without a break can really do damage to one's ability to see.
d.
recent research puts forth the idea that sitting in front of the computer for long periods can have detrimental effects on one's health.

How can a speaker best appeal to an audience? a. by revealing just enough information to make the au us b. by allowing the audience to ask questions about the speech's subject matter c. by adapting the speech to the expectations and knowledge of the audience d. by encouraging listeners who disagree to voice their opinions

Write about a scientist and present information including a short biography, contribution,their scientific achievements and contribution to science

The rich natural resources made the sacramento valley a "garden of eden." permanent villages were established about 8,000 years ago.which choice combines these two sentences from paragraph two to achieve a coherent flow of ideas? a) the rich natural resources made the sacramento valley a "garden of eden" and permanent villages were established about 8,000 years ago. b) permanent villages were established about 8,000 years ago and the rich natural resources made the sacramento valley a "garden of eden." c) the rich natural resources made the sacramento valley a "garden of eden; " and so the permanent villages were established about 8,000 years ago. d) because of the rich natural resources which made the sacramento valley a ‘garden of eden,’ native americans established permanent villages there 8,000 years ago.