What was aristotle's air engine? a. a device using pneumatics. b. a theoretical model for the transmission of sound. c. an explanation for the movement of an arrow. d. a way of accounting for wind without resort to deities.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

a. carbon monoxide from car exhaust

b.particulate matter, such as soot

c.water vapor from a factory smokestack

d.acid rain

these are the answer choices im on that question right now