Most fish have swim bladders that let them take in air to rise or sink, like submarines?
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Pop Quiz
What is the unique evolutionary feature of a camel’s eye?
It has a second set of thick, transparent eyelids
It has 3 eyelids
It has nocturnal vision to see to trek across the desert at night
It reproduces its cornea every 3 years to avoid long-term damage from sand abrasions
It blinks automatically (up to 1,200 times per minute) to continually clean out desert sand
Which ancient civilization invented the magnet?
The Egyptians
The Greeks
The Aztecs
The Romans
None of the above
How fast is the speed of light?
It depends on the location of the object in motion due to Earth’s gravitational pull
It varies with a planet or moon’s atmospheric makeup
186,000 miles/second
3 million miles/minute
The same as Superman’s best day in the air
The human eye blinks:
Approximately every 5 seconds.
To coat our eyes with oil to help lubricate it and prevent it from drying out.
To coat our eyes with tear fluid to help lubricate it and prevent it from drying out.
Automatically when startled or when objects move rapidly toward the face to shield the eyes so nothing gets in them.
All of the above.
Which is the first species considered endangered due mainly to the effect of Global Warming?
Coral
Salmon
Albatross
Polar bear
African Elephant
