Which of the following is least likely to become a fossil? (Won't become fossilized)
bones
skin
teeth
shells
The type of fossil where all minerals replace all or part of an organism.
petrified fossil
trace fossil
pseudofossil
bone
Where were fossils containing FRESHWATER fish formed?
deep in ocean water
in a hot spring
in an underground reservoir
in a lake
Fossils found in the top layer of rock are the ___________________.
youngest
cleanest
oldest
dirtiest
What can cause mass extinction?
disease and/or starvation
asteroids
climate changes
all of the above
Which is most likely to contain fossils?
igneous rock
sedimentary rock
metamorphic rock
native minerals
What are the preserved remains, traces, or evidence of once living organisms called?
plants
rocks
fossils
invertebrates
Hardened tree sap that preserves the remains of an insect is called _______________
a mold fossil
a cast fossil
a tar fossil
fossilized amber
What happened during the Cambrian Explosion?
the supercontinent broke apart
an asteroid collided with Earth
a great number of different organisms evolved
mammals spread into every environment on Earth
What do we call scientist who study organisms that lived long ago?
meteorologists
biologists
paleontologists
archaeologists
A fossil that dissolves and leaves a hollow area is called _______________.
amber
cast
a mold
An insect preserved in amber and a tree that has turned to stone are examples of:
reconstructions
restorations
sap
What do you call a fossil that helps determine the age of the rock layer?
an index fossil
an hourglass fossil
a radioactive fossil
Which animal is an invertebrate?
frog
fish
snake
insect
What is formed when minerals seep or fill in a mold?
mold
coal
granite
What do you call the change in a species over time?
geologic scale
relative age
elevation
evolution
Fossils provide evidence for all of the following EXCEPT for:
changes in Earth's surface
how Earth originally formed
how Earth's environments have changed over time
how groups of organisms have changed over time
What will happen to a species that does NOT have the traits needed to survive?
learn
become extinct
adapt
reproduce
Why do scientists think the dinosaurs became extinct?
too much rain
human influence
new predators killed the dinosaurs
meteorite/asteroid hit the Earth
