Scientists can determine if oxygen existed in earth's archean atmosphere by
a. looking at the amount of salt content in rocks.
b. looking for oxidized iron in rocks.
c. determining the lack of oxidation that occurred.
d. determining how many people survived

Which sentence describes william henry harrison's contribution to the us efforts in the war of 1812? a. he was responsible for securing the us coast against british warships. b. he successfully kept the american indians out of the war against britain. c. he defeated the american indian forces at the battle of the thames. d. he was responsible for building an alliance with the creek tribe. e. he successfully kept the british army from entering washington dc.

Historians believe that animals drawn in cave paintings during the paleolithic era could have represented each of the following except a a. successful hunt b. domesticated pet c. god that was worshipped d. way to obtain an animal's spirit select the best answer from the choices provided

Javier is considering two options for college. option a: complete the first two years of schooling at a community college and then transfer to a university. option b: complete all four years of schooling at the university. community college financial analysis costs per year financial aid package per year tuition & fees scholarships & grants $3,000 $1,000 room & board $1,000 university financial analysis costs per year financial aid package per year tuition & fees scholarships & grants $10,000 $15,000 room & board work-study $11,500 $4,000 which statement about the cost of the options is true? option b will save him $1,000. option b will save him $2,000. option a will save him $14,000. option a will save him $17,500.