A primary rainbow is brighter than a secondary rainbow because
A) sunlight reaching it is more intense.
B) there is one less reflection inside the water drops.
C) larger drops produce primary rainbows.
D) the secondary bow is a dim reflection of the primary rainbow.
E) none of the above
Question 2
Rainbows are not usually seen as complete circles because
A) the ground is usually in the way.
B) they are actually elliptical.
C) they have no bottom part.
D) raindrops are not perfectly round.
E) rainbows are arched shaped.
Polyketides as secondary metabolites
Primary, secondary, and tertiary endosymbiosis.
Plant apical meristems and the primary tissues they produce.
Forms of primary adult glaucoma: (a) in chronic open-angle glaucoma, the anterior chamber angle rema
One Module of the Primary Visual Cortex
Graphs of Primary Trigonometric Ratios