According to new studies, what did every modern dog descend from?
approximately five female Asian wolves
The Taco Bell chihuahua
English setters and Labrador retrievers
American wolves in North, Central, and South America
What does the author describe in the section "From Wolf to Woof"?
Dogs that were not afraid of people ate well and survived
Some theories about the way in which dogs evolved are wrong
Researches extracted DNA from the cells in dog bones
Genes determine a dog's inherited characteristics
Read these se"Some scientists said dogs evolved as two separate species 135,000 years ago in two parts of the world. Now, researchers say, those theories are wrong." What evidence supports the conclusion that those theories are wrong?
Five female Asian wolves could pick up human signals
Ancient American dogs had similar DNA to European dogs
Each year we spend billions of dollars on our canine pals
Asian wolves came to the Americas with Christopher Columbus
Scientists have long known that dogs evolved from wolves. But no one knows exactly how dogs became domesticated. Based on these sentences, what can you infer about wolves?
Wolves are not domesticated
Wolves became extinct
Wolves come when people call them
Wolves were raised by scientists
What is the main idea of "The Wolf Within"?
A land bridge once linked northern Asia and North America
Dogs are the most popular type of pet in the United States
Christopher Columbus arrived in the Americas in 1492
Researchers say every modern dog descended from Asian wolves
"Scientists have long known that dogs evolved from wolves." Based on this sentence, what does the word "evolve most likely mean?
To outlive
To develop and change
To tame
To die off completely
"A land bridge once linked Asia and North America." What word or phrase could replace "once linked" without changing the meaning of the sentence?
Still links
Later links
Used to link
Always linked
Scientists used to think dogs evolved in two different groups in which two parts of the world?
Europe and Asia AND North, Central, and South America
According to new studies by scientists, how do the genes of ancient American dogs compare to the genes of dogs born in Europe and Asia?
The genes of the ancient American dogs were similar
About how many tigers are in the wild today?
3,200
100,000
50,000
300
The passage describes the problem of tigers being wiped out. What is one possible solution to this problem?
allowing hunters to enter national wildlife parks
increasing the use of tiger bones in medicine
increasing the demand for tigers' fur and meat
making people more aware of the dangers tigers face
One reason that tigers are going extinct is because they cannot get enough food to eat. What evidence from the text supports this statement?
"In Russia, less forests mean less room to roam for food"
"The oil from plants is used to make ice cream and lipstick"
"In Indonesia and Malaysia, loggers collect palm oil"
"In China, poachers hunt tigers"
Based on the information in the text, why might leaders be working to reduce the demand for tiger fur and bones?
Poachers will hunt if people don't need fur and bones
Tiger poachers won't hunt if people don't need fur and bones
People will demand more tiger meat
Leaders want to keep tiger fur and bones
What is the main idea of "Tiger Watch"?
Wild tigers live in 14 countries today
Officials plan to create a system to stop tiger hunting
Tigers live in forests and jungles across China
Wild tigers are being wiped out by two major threats
The map at the end of the text shows where tigers can be found today compared to where they could be found in the past. Why did the author include this map?
To convince readers that the number of tigers will increase
To convince readers that the plan is working
To show how much the number of tigers decreased
To show how big Asia and Europe are
Choose the answer that best completes this sentence. "Officials plan to create a system to keep poachers from entering national wildlife parks ___________ poachers are a major threat to the tiger population.
therefore
instead
moreover
because
