The entire body of individuals born and living of about the same time
generation
inherit
descend
What does the author describe in the section "From Wolf to Woof"?
Researches extracted DNA from the cells in dog bones
Genes determine a dog's inherited characteristics
Dogs that were not afraid of people ate well and survived
Some theories about the way in which dogs evolved are wrong
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 Indonesia and Malaysia, loggers collect palm oil"
"In China, poachers hunt tigers"
"In Russia, less forests mean less room to roam for food"
"The oil from plants is used to make ice cream and lipstick"
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.
because
moreover
instead
therefore
"Scientists have long known that dogs evolved from wolves." Based on this sentence, what does the word "evolve most likely mean?
To die off completely
To tame
To develop and change
To outlive
How are people working to protect the tiger population?
Making people aware of the dangers tigers face
Existing as the only one or as a sole example
unique
demand
"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
Used to link
Later links
Always linked
About how many tigers are in the wild today?
3,200
300
100,000
50,000
Belonging or pertaining to the cat family
habitat
feline
poach
To manage or influence skillfully, especially in an unfair manner
characteristic
manipulate
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 show how big Asia and Europe are
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
What is the main idea of "Tiger Watch"?
Officials plan to create a system to stop tiger hunting
Wild tigers live in 14 countries today
Tigers live in forests and jungles across China
Wild tigers are being wiped out by two major threats
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
Each year we spend billions of dollars on our canine pals
Asian wolves came to the Americas with Christopher Columbus
Ancient American dogs had similar DNA to European dogs
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
An urgent or pressing requirement
unique
demand
A distinguishing feature or quality
manipulate
characteristic
to go or pass from a higher to a lower place
inherit
generation
descend
Based on the information in the text, why might leaders be working to reduce the demand for tiger fur and bones?
People will demand more tiger meat
Poachers will hunt if people don't need fur and bones
Tiger poachers won't hunt if people don't need fur and bones
Leaders want to keep tiger fur and bones
What is the main idea of "The Wolf Within"?
Researchers say every modern dog descended from Asian wolves
Christopher Columbus arrived in the Americas in 1492
A land bridge once linked northern Asia and North America
Dogs are the most popular type of pet in the United States
The natural environment of an animal
habitat
poach
feline
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
According to new studies, what did every modern dog descend from?
American wolves in North, Central, and South America
The Taco Bell chihuahua
English setters and Labrador retrievers
approximately five female Asian wolves
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
The passage describes the problem of tigers being wiped out. What is one possible solution to this problem?
increasing the demand for tigers' fur and meat
increasing the use of tiger bones in medicine
allowing hunters to enter national wildlife parks
making people more aware of the dangers tigers face
To take fish or game illegally
poach
habitat
feline
Tigers are being wiped out by two major threats. What are the two major threats to the tiger population?
Habitat loss and poaching
To take or receive a title by succession or will
inherit
generation
descend