WorksheetsHistory of life
Total questions: 20
Worksheet time: 13mins
What early earth like
Nice and cool
Hot and filled with toxic gas
Breath able air
What is the correct order
Periods, eons,era
Era,eons,periods
Eon, periods, eras
These were the first eukaryotes
(a)
What is a stromatolite made up of.
(a)
This absorbs ultraviolet radiation
(a)
Organisms began living on Earth about 3.8 billion years ago. Then 1.2 billion years ago, ______ evolved
multicellular organisms
single celled organisms
humans
Cyanobacteria changed the early Earth's atmosphere by giving off...
carbon dioxide
ammonia
hydrogen
oxygen
Which era is the most modern and the one that we are currently living in?
Cenozoic
Cretaceous
Permian
Which of the four key principles of Darwin’s theory of natural selection explains why no two zebras have the exact same pattern of stripes?
overproduction
variation
adaptation
Humans and chimpanzees cannot be traced back to a common ancestor because humans evolved from chimpanzees.
True
False
Insects probably owe their successful number and diversity to the evolution of...
legs
wings
vision
flowers
Determining the age of a rock by comparing relative proportions of its radioactive isotopes is called...
radioactive decay
radiometric dating
isotope dating
half lives
Unicellular organisms are those organisms that are made up of a single cell
True
False
What was the name of Darwin’s book in which he published his ideas about evolution and natural selection?
On the Origin of Species
Silent Spring
Missing Marshes
The extinction of species, both plant and animal, have happened regularly over the course of Earth's history.
True
False
How can scientists determine the relative age of a fossil
Radioactive Dating
Compare it with fossils found in other rock layers
Chemical Dating
What is the cambrian explosion
What is a land bridge
A bridge made by a tree
A area that is safe to walk on
A area between continents that allowed animals to cross
What is a Ice Age
(a)
