WorksheetsL6 Extinction
Total questions: 12
Worksheet time: 14mins
What is a possible reason for extinction?
The number of habitats falls below a critical level
Too many resources
Less competition
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
Species that are in danger of becoming extinct are called __________.
endangered
not lucky
extinct
in a jam
When a plant or animal becomes extinct, it is gone _______.
forever
until next week
for 5 years
to sleep
Evidence of an animal or plant that lived a long time ago on Earth is called a ________.
fossil
tiger
extinct
endangered
A ______________ species is on its way to becoming endangered or extinct.
threatened
cuddly
sleeping
fossil
What provides scientific evidence of past life?
history books
timelines
stories
fossils
