Biology
What “E” astronomical event, during which the moon blocks Earth’s sunlight, can also affect the flight patterns of certain birds?
Eclipse
Mexico's Mario Molina picked up a 1995 Chemistry Nobel for his role in discovering that CFCs are a threat to what UV-absorbing portion of Earth's stratosphere?
Ozone
What's the largest freshwater lake in the world by volume?
Lake Baikal
An "umbilicoplasty" is a form of cosmetic surgery intended to modify the appearance of what typically unnoticed body part?
Belly Button
An anoxic environment wouldn’t be great for humans, but certain organisms thrive in them. Anoxic means that which element needed by most life to survive is absent?
Oxygen
What creature with an equine name has no teeth or stomach, mates for life, and is one of the only species on Earth where the male carries the unborn offspring?
Seahorse
While not an actual guinea pig, who is the shy, long-suffering assistant of Dr. Bunsen Honeydew from “The Muppet Show” who shares his name with a flat-bottomed cylindrical container used in chemistry?
Beaker
What's molten rock inside a volcano called?
Magma
What joint in your arm is where the humerus, radius, and ulna bones all meet?
Elbow
What bacterium, better known in its partially abbreviated name, is Gram-negative and rod-shaped? It had a famous outbreak in 1993 when “Jack In The Box” inadvertently spread it across four states.
E. Coli
An average human performs what basic eye function about 20 times a minute, or over 10 million times a year? At year's end, your eye must be really moist.
Blink
What element, atomic number 3 on the periodic table, is an essential component of batteries often used to store harvested solar energy?
Lithium
After diamond, what's the hardest substance known to man?
Silicon Carbide
Which sensory organ is the tympanic membrane found in?
Ear
The two subunits of the organelle known as the endoplasmic reticulum are typically abbreviated RER and SER. What do the "R" and "S" stand for in these abbreviations?
Rough
Twenty percent of the oxygen in the Earth’s atmosphere is provided exclusively by what large rainforest?
The Amazon
An organic chemist who received a B.A. in Chemistry from Harvard in 1909, and helped identify complex vegetable oils and plant alkaloids, including CBD in 1940, is Roger who?
Where's the largest salt flat on Earth?
Bolivia
There are non-image-forming ganglion cells in the human eye (and other mammals) that are still photosensitive and receive light signals that can help regulate and suppress the production of what "M" hormone that helps regulate the sleep-wake schedule?
Melatonin
All amino acids contain carbon, hydrogen, oxygen, and what other element that starts and ends with the same letter?
Nitrogen
Though it's not as sinister as its name suggests, the eastern hellbender is the largest kind of what 10-letter “S” amphibian within the Americas, according to the Smithsonian’s National Zoo & Conservation Biology Institute?
Salamander
As its chemical symbol of Hg indicates, what liquid-at-room-temperature metallic element was once known as "hydrargyrum"?
Mercury
What's the name of the super continent that was comprised of the seven modern continents?
Pangea
Small structures called "papillae," including types called fungiform and filiform papillae, are what give what part of the human body its characteristically rough texture?
Tongue
What iron-containing protein makes up 96% of the dry weight of a red blood cell, and 12 to 20 grams of every 100 mL of healthy human blood?
Hemoglobin