What are ecosystems?
All living and nonliving things in an environment and the many ways they interact is an ecosystem. True or false?
True
Living things compete with each other for ___ and space.
food
renewable resource are resources that can be replaced. True or false?
True!:)
No longer exist can also be described as ....
extinct
A scientist who studies fossils are called...
Paleontologist
_________ is all of the member of one species that live in an area
Population
Resource - important material that nonliving things need. True or false?
False. Living things need resources, not nonliving things.
Only 10% of Earth's water is drinkable. True or false?
false! Only 1% is drinkable.
The remains or mark of an animal or plant that lived long ago.
fossil
Fossil fuels take 10 years to form. True or false.
False! They take MILLIONS of years to form.
True
The movement of worn away rocks or soil is...
What was made from organisms that lived long ago?
Fossil fuels.
What happens to the soft parts of an animal while the hard parts become fossils?
Decays or eaten.
A timeline of the history of Earth is called...
A geologic time scale
Tundra
Some animals change their _________ to improve their habitat.
environment
Conservation is using _____ as little as possible and not wasting them.
resources
Sediments are bits of rock, sand, shell, and other material that harden into _____
rock.
Describe what a cast fossil and mold fossil is.
The space in rock in the shape of a living thing is called a mold fossil. Minerals that harden into the shape of the mold is called a cast fossil.
Describe some characteristics of an animal that lives in a cold habitat.
Long, thick fur
What is an example of a human affecting the environment?
Building a bridge (killing aquatic ecosystems)
Building a nest (for birds)
etc.
What is the definition and example of a nonrenewable resource (has to be exact)?
resources that exist in limited amounts or are used faster than they can be replaced in nature.
Example - coal, oil, gas, fossil fuels.
What is the difference between animal footprints and skeletons?
Footprints provide clues about how an animal moved about, while skeletons provide clues about what an animal looked like.
Describe what we can tell about the depth of a fossil.
The deeper a fossil is found buried in the Earth, the older it most likely is.