Suppose that on a certain day the air quality index value for ozone is 204. What should a person with asthma do? A.
avoid all outdoor exertion
B.
limit prolonged outdoor exertion
C.
participate in normal outdoor activities
D.
avoid prolonged outdoor exertion.

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d