ES1
A ______ is any remains or trace of a formerly living thing preserved by natural processes.
Fossil
_______ ________ are plants and animals that live in the sea
Marine organisms
These fossils are not remains of the organisms themselves but they are signs that they lived.
Trace fossils
These fossils are usually less than a millimeter in size.
Microfossils
______ are interesting marine animals that look like plants.
Crinoid
These extinct plants are similar to the modern quillwort?
Giant Club Moss
These still-living, bottom-dwelling marine animals are very similar to a starfish?
Brittle Star
When dead things don't become fossils it is usually due to ______
Decaying
Outside of decaying these animals prevent fossils from being made?
Scavengers
Some fossils formed when organisms were trapped in places other than in flood or volcanic sediments this is called?
Fossil traps
Outside of putting it in your drink _______ can trap organisms too
Ice
The area of science that studies and classifies fossils is called?
Paleontology
Biologists assign all living things unique ______ names.
Scientific
Fossils that seem to appear reliably in their proper sequence across the world are called _____ ______
Index fossils
A species is headed for ______ when more animals or plants die than are born in a generation.
Extinction
Many _______ believe that a large asteroid impact led to the extinction of dinosaurs.
Paleontologists
Natural solid, liquid and gas materials are good and useful sources of thermal energy or ____
Fuels
_____ is classified as an organic sedimentary rock.
Coal
_______ brown coal is dark brown and relatively soft and crumbly.
Lignite
____________ coal also called soft coal is denser and harder than lignite.
Bituminous
_____ is the hardest form of coal.
Anthracite
_______ is a mixture of many different kinds of organic molecules.
Petroleum
As plant matter built up, it compressed into fibrous matter called?
Peat
Most scientists agree that petroleum and natural gas came from fossilized marine plants called?
Phytoplankton
Carbon dioxide and water vapor are called ___________ _______
Greenhouse gases