1. Mountain lion
   Jaguar
2. Bobcat
   Lynx

Bobcats are very shy so you don't see them often. This is why it is easy to forget that they are actually very numerous.

1. Conductivity and resistance of a wire.
   Bounciness of a surface.
2. Acceleration of an object.
   Brittleness of a substance.

Ohms measure how much a wire likes or dislikes having power put through it. If there are a lot of Ohms then you lose energy as heat, and that means the wire is no good for circuits.

1. Just over 8 minutes.
   An hour.
2. Under a minute
   More than a day.

You could make nearly two soft-boiled eggs in the time it takes light to get from the sun to Earth. This means that if the sun just turned off one day, we wouldn't know anything had happened for eight minutes. That means you could make one soft-boiled egg and eat it before realizing the second egg is the last egg you're ever going to enjoy.

1. Russia, by far.
   Pluto, by far.
2. Russia, by a little.
   Pluto, by a little.

Pluto may only be a dwarf planet these days but it's still slightly bigger than Russia, clocking in at just over 17.6m square kilometers. Russia is "only" just over 17m square kilometers, meaning it is a little smaller, but not by much.

1. Different architecture.
   Trick question; you can't.
2. Different lightbulbs.
   A road separates them.

The bulbs are different so the two halves of the city look a little different from space. People never got out of the habit of using the types of bulbs they liked.

1. 1909
   1979
2. 1889
   1942

The first pizza delivery went to the Queen of Italy, very fittingly. She ordered it in 1889. So when you order pizza, technically you are living like a queen!

1. They're hollow.
   They're very light.
2. They're metal.
   Nothing, they are the same as other bones.

Bird bones are hollow. This is why birds are light enough to fly. It's also why you should not feed your dog chicken bones, because they splinter and then can scratch up your dog's throat and cause injury or even death.

1. Y
   T
2. Ash
   Thorn

Thorn is an old letter that is pronounced "th", but it looks like a modern "Y". That's why it's not really "Ye Olde Tea Shoppe", it's just "THE Olde Tea Shoppe"!

1. Albanian
   Celtic
2. Japanese
   Persian

Japan is not part of the Indo-European language family, as it is too far east. There are languages in the group that are supposedly connected, though speaking Celtic won't help you very much if you plan to learn Persian!

1. 1.3
   2.4
2. 6.8
   11.9

The Marianas Trench is nearly seven miles deep! If you put a human down there without the right suit, their head will pop like a melon!

1. Ganglion
   Dendrite
2. Meninges
   Myelin

The meninges is very important to the brain, being a sort of membranous bag that encircles it. It can surely injure the brain if you get meningitis, as much as it protects it when it's healthy. Dendrites, ganglions, and myelin are all parts of brain cells or brain cell insulation.

1. Earthworm
   Fly
2. Spider
   Crab

Earthworms are annelids. Arthropods have jointed hard exoskeletons, meaning they are not squishy, unlike annelids which include molluscs. Most of the really scary creepy-crawlies are arthropods.

1. Increased acidity.
   Increased temperature.
2. Increased ocean pollution.
   All of the above.

Coral reefs are one of the more fragile systems when it comes to our world. They are the canary in the coalmine of global warming, as higher temperatures, higher acidity (due to higher carbon dioxide in the air dissolving into the water and making it a little acidic), and higher particulate pollution (from burning fossil fuels like coal) will all kill them.

1. In the shower.
   In a tank.
2. Underwater.
   In space.

It's crazy but it's true! British armies were being delayed because they had to stop and get out of their tanks to have tea, so they invented a special kettle that you can use to brew tea without stopping your tank.

1. 23
   77
2. 101
   88

There are 88 keys, which cover just over seven octaves. An octave actually has 12 notes if you count the black keys, but eight if you count the white only.

1. Richard Rodgers
   Cole Porter
2. Stephen Flaherty
   Bobby Lopez

Rodgers and Oscar Hammerstein wrote many of your favorite musicals! Rodgers previously worked with Lorenz Hart, but most of his biggest successes came with Hammerstein.

1. James Cameron
   Ava duVernay
2. Frank Capra
   Walt Disney

Jim Cameron is the director of both Titanic and Avatar, which are the two top-grossing movies of all time. If you adjust for inflation, however, the top-grossing movie is still Gone With the Wind.

1. The Simpsons
   Jeopardy!
2. General Hospital
   Full House

General Hospital debuted April 1, 1963 and has been going strong ever since. It has had more than 10,000 episodes!

1. Fat to muscle ratio.
   Fat to weight ratio.
2. Density of fat.
   Total amount of fat.

BMI is a deeply flawed system, as you can have a very "good" one and still be super unhealthy, and vice versa. However, it's one metric that, taken alongside many others, can be a useful guide for a person seeking to improve their health.

1. 20,000
   6,000
2. 12,000
   2,000

Horses were domesticated in modern Kazakhstan and Russia, on the steppes. They then spread throughout Europe and Asia.

1. Revolver
   Compressor
2. Condenser
   Evaporator

AC works by making refrigerant substances turn between gas and liquid very quickly. As liquid, they absorb heat, and as gas they expel it. So they take up heat from inside the house and expel it outside.

1. Over two hours.
   One to two hours.
2. between 30 minuts and an hour.
   Under 30 minutes.

You could watch a movie in the time it would take a cocodile to need to surface. Even then it might only put its snout above the water, so you could miss it. That's how it hides from its prey.

1. 3:43.13
   3:53.00
2. 3:58.98
   4:01.01

The record is held by a Moroccan runner, Hicham El Guerrouj. The first person to break the four-minute mile on the record is Roger Bannister in 1954.

1. Florence
   Naples
2. Rome
   Milan

Naples is the home of the lasagne. It goes back to 14th century cookbooks that explain how to make a dish of alternating meat and pasta layers.

1. Brain
   Heart
2. Bones
   All of the above!

Jellyfish don't have brains, hearts or bones. They have a nervous system that reflexively reacts to things around them, meaning they don't technically know that they've stung you, nor can they feel bad about it.

1. 5-10
   10-15
2. 15-30
   Higher than 30.

While some hummingbirds have been recorded beating their wings faster than this, most beat around 10-15 beats a second. That's what makes the classic humming sound; it's not coming from their mouths!

1. Flange
   Band
2. Murder
   Pack

You call a group of gorillas a band or a troop. It is also correct to call them a "whoop," which naturalists actually started using as a joke after Rowan Atkinson's popular "Gerald the Gorilla" sketch on his first big hit show, "Not the Nine O'Clock News."

1. Over 80 feet.
   60-70 feet.
2. 50-60 feet.
   Under 50 feet.

The official record belongs to Rodrigo Koxa, a Brazilian surfer, who surfed a monster wave over 80 feet high! His record may have been broken in the summer of 2018, as video has surfaced of a man surfing a wave that could be a little taller still.

1. Scales
   Bony plates
2. Cartilage
   Just skin!

Seahorses are unusual as they do have have scales. Instead they have bony plates that are not like cartilage or scales.

1. 16
   27
2. 79 or more
   2

Jupiter has so, so many moons - definitely dozens. The latest official count is 79, but there may well be more. Some are so big they are larger than some planets!

1. Ticklishness
   Moodiness
2. Intelligence
   Movement

Ticklishness is the more common term for knismesis, which means getting wriggly when touched very lightly. It is believed to have evolved as a way to automatically shake off creepy-crawlies without having to think. Many animals are ticklish, such as horses, dogs, and of course, humans!

1. Balance
   Kinetics
2. Proprioception
   Spatiality

Proprioception is the sense that, for example, I know where my hand is when I can't see it because it is behind my back. It's why you can shut your eyes and still successfully clap your hands. It's a key missing piece for prosthetics, which have not historically had it - though modern versions are starting to, which is radically improving the lives of amputees!

1. Alternating.
   Direct.
2. It depends on demand.
   It depends on the region.

Alternating current is more common in the mains. This is current that changes direction repeatedly. Using it makes it easier to transmit a lot of power at high voltage.

1. 100%
   20%
2. 80%
   10%

Cats have a lot of bones in their tails considering how light they are relative to the rest of their bodies. They have a total of 245 bones.

1. Meryl Streep
   Katharine Hepburn
2. Sandra Bullock
   Jodie Foster

You'd think it would be Streep, but she is still one short of Hepburn's record. Katharine Hepburn has an astonishing four Best Actress Oscars. Amazingly, Cate Blanchett once won Best Supporting Actress for playing Hepburn, making her the only person ever to win an Oscar for playing an Oscar-winner.