WorksheetsExtinction and Endangerment
Total questions: 25
Worksheet time: 21mins
When an entire species has completely died out, it has gone EXTINCT.
True
False
Extinction happens:
Over a very SHORT period of time (such as a few months).
Over a very LONG period of time (such as a many years).
About 65 million years ago, ____________ hit the earth and many plants and animals did not survive or ever come back.
a dinosaur
the Corona Virus
an asteroid
the Sun
Diseases can cause living things to die out.
True
False
Scientists now believe that HUMANS may be causing extinction (living things to die out).
True
False
All of the following can lead to animal extinction EXCEPT?
People building on land where animals once lived
Pollution (poisons animals)
People using animals for meat, clothing, fur, art.
The Flu virus
Climate Change
What do you call the plants or animals that are in danger of becoming extinct?
Endangered Species
Extinction
Extinct Species
Ecologically Extinct
What are the two types of causes of extinction?
Natural Causes of Extinction
Standard Causes of Extinction
Anthropogenic (Man-Made) Causes of Extinction
Civil Causes of Extinction
According to most scientists, what is the ultimate cause of most mass extinctions?
overhunting
evolution of new species to replace old ones
major change in environment
asteroid impact
True or False? Many scientists think that an asteroid caused the dinosaurs to go extinct.
True
False
Evidence of an animal or plant that lived a long time ago on Earth is called a ________.
fossil
tiger
extinct
endangered
