Chap 4 - Lilly Flashcards
THe struggle among organisms for water,food or other needs.
Competition
A substance in the environment that helps an organism survive.
Resource
What happens when harmful materials get into water,air, or land.
Pollution
When one kind of organism has very few of its kind left.
Endangered
The trace or remains of something that lived a long time ago.
Fossil
When one kind of organism has died out everywhere on earth.
Extinct
To use less of something.
Reduce
To use something again
Reuse
To turn old things into new things
Recycle
Water flowing over land that is usually dry
Flood
When there is an unusual lack of rain in an area for a long period of time
Drought
All the members of a single type of organism in an ecosystem
Population
All the living things in one place that interact
Community
