Organic Chemistry
3,3
Horse Hog or Dog
Animal Idioms
American History
100

You can breathe easy knowing photosynthesis causes plants to release this gas as a waste product. 

Oxygen

100

The Pleistocene glacial epoch is also known as the great this

Ice Age

100

Canadian Pacer and Arabian

Horse

100

Please Be Patient For a Moment

H.Y.H

Hold Your Horses

100

This infamous event on December 7, 1941, led the United States to enter World War II

Attack on Pearl Harbor

200

This elements footprint is everywhere: By definition, every compound studied by organic chemists contains it. 

Carbon

200

The CDC describes it as "a temporary sleep problem that usually occurs when you travel across more than three time zones"

Jet Lag

200

Irish Draught and Lipizzaner

Horse

200

You can go anywhere you want and do anything you wish in this life. 

T.W.I.Y.O

The world is your oyster

200

He assassinated Abraham Lincoln after the Civil War.

John Wilkes Booth

300

Triglycerides are the most common form of this. Some stay clear of the saturated ones.

Fats
300

A killer for hire, one of Dawson's favorite video games too

Hit Man

300

Mulefoot and Hampshire

Hogs

300

Don't forget how many other single people are out there in the dating pool. 

T.A.P.O.F.I.T.S

There are plenty of fish in the sea

300

Daily Double

Out of the wars the US has participated in, list 2 of the three that lasted the longest

400

In chemistry, this unit of measure equals 6.02 times 10^23 of anything-- atoms, molecules. Even mammals that burrow in your lawn.

Mole

400

Beastly term for someone who religiously works out at, let's say, Planet Fitness

Gym Rat

400

Shiba Inu and Saluki

Dog

400

Make all the necessary preparations before you start.

G.Y.D.I.A.O

Get your ducks in a row

400

This president vetoed more legislation than any other president

 Franklin Delano Rosevelt

500

Molecules with at least one unpaired electron

Radicals

500

This Scottish outlaw spent time in Newgate Prison but was pardoned before he was to be sent to Barbados

Rob Roy

500

Large black and large white

Hog

500

You are in big trouble

Y.G.I.C

Your goose is cooked

500

Terry Branstad is the longest-standing governor in US history in this state

Iowa