Author Question: Without the greenhouse effect, the oceans on the Earth's surface would A) have evaporated B) be ... (Read 109 times)

karen · **on:** Jul 27, 2018

Without the greenhouse effect, the oceans on the Earth's surface would

A) have evaporated
B) be much the same as they are today
C) have covered the entire surface of the Earth
D) be frozen

Question 2

A plano-convex lens is to have a focal length of 40 cm. It is made of glass of index of refraction 1.65. What radius of curvature is required?

A) 36. cm
B) 26. cm
C) 13. cm
D) 32. cm
E) 44. cm