Reading comprehension : agronomy

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Yellowstone National Park is in the U.S. states of Wyoming, Idaho, and Montana. It became the first National Park in 1872. There are geysers and hot springs at Yellowstone. There are also many animals at Yellowstone. There are elk, bison, sheep, grizzly bears, black bears, moose,coyotes, and more. More than 3 million people visit Yellowstone National Park each year. During the winter, visitors can ski or go snowmobiling there. There are also snow coaches that give tours. Visitors can see steam (vapor water) come from the geysers. During other seasons, visitors can go boating or fishing. People can ride horses there. There are nature trails and tours. Most visitors want tosee Old Faithful, a very predictable geyser at Yellowstone. Visitors can check a schedule to see the exact time that Old Faithful is going to erupt. There are many other geysers and boiling springs in the area. Great Fountain Geyser erupts every 11 hours. Excelsior Geyser produces 4,000 gallons of boiling water each minute! Boiling water is 100 degrees Celsius, or 212 degrees Fahrenheit – that’svery hot! People also like to see the Grand Prismatic Spring. It is the largest hot spring in the park. It has many beautiful colors. The beautiful colors are caused by bacteria in the water. These are forms of life that have only one cell. Different bacteria live in different water temperatures. Visiting Yellowstone National Park can be a Week–long vacation or more. It is beautiful, and there areactivities for everyone.

1) What is Yellowstone?
A. A park
B. A geyser
C. A mountain
D. A hot spring

2) Old Faithful is a…
A. river.
B. trail.
C. passage.
D. geyser.

3) Great Fountain Geyser erupts every 11…
A. minutes.
B. hours.
C. days.
D. months.

4) The largest hot spring in the park is…
A. Excelsior
B. Old Faithful
C. Great Fountain
D. Grand Prismatic

5) Whatcauses colors in the springs?
A. sunlight
B. bacteria
C. eruptions
D. temperatures

1) Steam is…
A. snow.
B. running water.
C. freezing water.
D. water in vapor form.

2) Something predictable is something…
A. people enjoy.
B. people talk about.
C. people know in advance.
D. people pay for in advance.

3) Boiling water is…
A. 0 degrees C. or 32 degrees F.
B. 100degrees C. or 212 degrees F.
C. very hot.
D. Both B and C are correct.

4) What are bacteria?
A. Forms of life with one cell
B. Multi-celled organisms
C. Sunshine
D. Various types of water.

5) Different temperatures are different…
A. levels of heat and cold.
B. amounts of water.
C. levels of rainfall.
D. colors of water.


The cactus is a plant which grows in very hot, dryplaces. They do not have leaves. Instead, they have spiny needles which stick out of their stems. There are many shapes of the cactus. Some are small and round. Others are tall like columns or pillars. Some are shaped like tubes or bells. Some are shaped like wheels. Some grow as trees or shrubs. Others grow as ground cover. Cactus flowers are big, and some of them bloom at night. Their flowerscome out at night because they are pollinated by insects or small animals that come out at night. Insects and small animals carry pollen from one cactus to another. Most cacti live in North and South America. Others live in Africa, Madagascar, and Sri Lanka. Cacti do not have very large leaves because large leaves would allow the water to evaporate. When water evaporates, it changes from a liquidto a gas. When it becomes a gas, it is light enough to move through the air. That would be bad for the cactus because the cactus needs the water to live. Some cacti have waxy coatings on their stems, so that water will run down the stem to the roots. Cacti can absorb water from fog in the air, since it does not rain very much in the desert. Most cacti have long roots which can spread out close to...
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