A fish's eye is well-suited to seeing under water, but what can you say about his vision if he is taken out of water?
A) His acuity (sharpness of vision) would be greater.
B) He would suffer from astigmatism.
C) He would be nearsighted.
D) He would be farsighted.
E) His vision would be limited to a cone of half-angle of about 49.
Question 2
Why was the globular cluster M13 selected as the target for the 1974 Arecibo message?
A) globular clusters are the most likely place to find stars with planetary systems
B) stars in globular clusters are rich in heavy elements, the building blocks of life
C) signals from advanced civilizations have previously been detected coming from this cluster
D) globular clusters are densely packed with stars, hence maximizing the probability of interception by an advanced civilization
Structure of fish gills.
Water Molecules Surround Ions
Bird vision
Water Vapor and Liquid Water
The Importance of Water
When lithium chloride, LiCl, dissolves in water, which of the following is forme