1. Overtaking species
   Invasive species
2. Unwelcome species
   Branded species

Whether rangers are talking about nonnative plants or animals, they are talking about an invasive species. The onset of an invasive species can cause a lot of ecological damage or completely eradicate species that naturally grow in an area.

1. Limnology
   Biology
2. Ecology
   Geology

Park rangers often work near and participate in the conservation of inland waterways. The name of the study of inland waters, their drainage systems, and their ecology is limnology.

1. Immobilize
   Transport
2. Call 911
   Give them food

When park visitors become lost or injured, park rangers are often the first point of contact. During their emergency training, they learned that the first step to rescuing is to immobilize the victim.

1. 16
   18
2. 21
   30

Though some junior ranger positions employ seasonal workers of many ages, to become a full-blown park ranger, you must be at least 21 years of age. It varies from state to state, but 21 is the recommended age.

1. The tree falling over
   Wood shavings around the tree
2. The tree losing branches
   The tree is turning colors early.

Park rangers spend a lot of time checking the health of the trees in their assigned areas. Even in the woods, termites can be a major problem. The first sign of termite infection is strange wood shavings at the base of the tree.

1. 4
   3
2. 1
   2

x = 4. You may wonder what math has to do with being a park ranger, but you might be surprised. From solving visitor problems to measuring the growth of trees, park rangers must be able to pass a mathematical portion of a ranger's exam.

1. Interpretive ranger
   Protection ranger
2. Commissioned ranger
   Information ranger

While most park ranger positions require a bachelor's degree, the position of interpretive ranger often requires less schooling. Interpretive rangers do not venture deep into forests. Instead, they keep park visitors educated and informed.

1. I would look for the leaves of three.
   I would test a suspected leaf on my shirt.
2. I would recognize it by its color.
   I would look at the plants growing around it.

In order to identify poison ivy, you must look for the "leaves of three." Poison ivy has one large leaf with two smaller leaves growing off to the side. It also changes color throughout the year, so you can never count on the color to identify it.

1. Invasive species
   Wildfire
2. Privatization
   Lack of management

According to the U.S. Forest Service, the number one threat to parks and public lands is the outbreak of wildfire. With climate change affecting the weather, more wildfires have taken place in U.S. national parks in the last five years than ever recorded before.

1. Utah
   Texas
2. Florida
   Maine

In the United States, they are many different invasive species. However, Florida is the state that claims the most. In Florida's case, the invasive species of many different snakes have been released into the wild by negligent pet owners.

1. 30
   1,000
2. 4,500
   6,000

The U.S. Forest Service reports that nearly 6,000 acres of open grasslands, forests and swampland are lost every day. With cities expanding, the loss of open space is considered a major threat to ecological systems of public lands.

1. Grouse
   Beaver
2. Bobcat
   Sheep

One of the most important parts of a park ranger's job is monitoring local wildlife. The types of wildlife vary from park to park, and park rangers often have a background in biology, ecology or wildlife management.

1. 4
   640
2. 320
   110

In order for park rangers to adequately monitor the landscape of their designated area, they must be good with land measurements. Every park ranger should know that there are 640 acres in one square mile.

1. P
   X
2. C
   F

To encourage new forest growth, trees must be strategically cut down from time to time. Rangers are often responsible for marking trees for removal. They mark them with spray paint and the letter X.

1. Protection ranger
   Official ranger
2. Commissioned ranger
   Interpretive ranger

Some park rangers also function as members of law enforcement. These rangers, called commissioned rangers, have received specialized training, and they are employed by the Department of the Interior.

1. Freeze
   Scream
2. Stomp
   Call 911

Park rangers face many dangers on the job. From unstable landscapes to natural predators, they must watch every step. If you were to encounter a rattlesnake while patrolling, the first thing you should do is stop moving and locate the snake.

1. US Forest Service
   Environmental Protection Agency
2. Bureau of Land Mangement
   Ansel Adams Trust

Founded in 1905, the United States Forest Service is the agency that manages wilderness areas. In total, the United States Forest Service oversees 193 million acres of grasslands and wilderness.

1. Composite sample
   Running sample
2. Hypodermic sample
   Grab sample

If you wanted to quickly test the current status of a body of water, you would take a grab sample. Park rangers are often responsible for monitoring water quality. If you needed to do repeated samples, it would be called a composite sample.

1. Water
   Soil
2. Light
   Atmosphere

Many park rangers have a background in biology or botany. They are constantly monitoring native plants and invasive species, and they know that the soil is the biggest source of nutrients for anything they find growing.

1. Ronald Reagan
   Bill Clinton
2. Abraham Lincoln
   Gerald Ford

Out of 45 US presidents to serve the country, only one of them was a park ranger. In 1963, Gerald Ford served as a seasonal park ranger at Yellowstone National Park. He was elected as president in 1974.

1. Head
   Bottom
2. Top
   Rear

Although not all park rangers are responsible for managing fish populations, most rangers must possess knowledge of an area's local types. If you were monitoring fish, you would note the pectoral fin which sits on the top of the fish.

1. 1918
   1974
2. 1963
   1981

Not always an inclusive organization, the US Forest Service began allowing female park rangers starting in 1918. The first female ranger is named Claire Marie Hodges. It was 22 years before the next female park ranger was hired.

1. Do not feed the bears.
   Do not hug the bears.
2. Do not take pictures of the bears.
   Do not chase the bears.

Visitors to any national park might be excited to encounter many sorts of wildlife including bears. As a park ranger, it is your job to advise visitors about bear safety. The first thing you would tell visitors is to never feed the bears!

1. Arsen
   Collaborate
2. Accessory
   Battery

Park rangers and law enforcement work very closely together. As part of a ranger's exam, you must know how to correctly spell a few words you might use when communicating with law enforcement. Here, the word arson is spelled incorrectly.

1. Trespassing
   Skirting
2. Breaking and entering
   Assault

After wilderness areas and parks have closed, usually around dusk, it is considered trespassing to ignore the signs and enter the park anyway. Park rangers are responsible for asking trespassers to leave or for contacting law enforcement.

1. A ribbon
   A dot on each side
2. A triangle
   A stop sign

When you are indicating that a tree needs to be cut down, you will mark it with the letter X. If you want to spare a healthy tree, you would mark each side of the tree with a dot around the size of a golf ball.

1. Geology
   Botany
2. Ecology
   Anthropology

Park rangers have diverse backgrounds ranging from hospitality to biology to anthropology. One of the most popular fields for park rangers to study is ecology. It's the study of the way organisms interact with their environments.

1. Listen
   Apologize
2. Restrain
   Threaten

Often times, park rangers are called up to defuse angry or tense situations between park visitors. According to the crisis management training they receive, the first step to calming things down is to listen to the issue.

1. DNA
   Virus
2. Bacteria
   Cell

Think all the way back to high school biology class, and you'll remember that the most basic unit of life is the cell. Many park ranger duties include taking notes with biological notation, and those old facts from school could come in handy!

1. I tell the visitor that they never sleep.
   I tell the visitor that they do sleep.
2. I tell the visitor that we don't know for sure.
   I tell the visitor that it depends on the kind of fish.

In addition to a litany of other duties, park rangers serve as educators and ambassadors to the visiting public. Any good park ranger would know that fish do sleep, but they do not have eyelids to close.

1. Other Learning Program
   National Parks Residency Program
2. Special Studies Program
   Outreach Program

People without the qualifications to be a park ranger can submit to the National Parks Residency Program. The program allows alternative fields of study to reside in the parks for a short period of time.

1. Goldfish
   Asian carp
2. Snakehead
   Salmon

Although there are many different sorts of invasive fish, the Asian carp is listed as number one. Asian carp are a big issue because they are predatory, and they often scare away or destroy native species of fish.

1. 2 years
   GED
2. 4 years
   High school diploma

It does vary from position to position, but most park ranger jobs require a bachelor's degree. Each state has a different requirement for training or experience, so it's important to check with your specific state.

1. Fire towers
   Public swimming areas
2. Air-conditioned office
   Patrolling dry riverbeds

During fire season, many park rangers will be put on the lookout for wildfires. From the fire tower, they have the highest vantage point in their park. Wildfires are the number one threat to parks, and being in the fire tower is a serious duty.

1. 10
   11
2. 8
   14

4(2) - 3 + 6 = 11. If you take an official park ranger exam, be prepared to do a lot of math. Even on the job, rangers are constantly measuring and calculating everything from land mass to visitor needs.