Population Flashcards
What is a food web
Consists of many overlapping food chains in a ecosystem
What is a food chain
A series of events when one animal eats another to obtain energy
What’s a biotic factor?
All the living or once living things in a ecosystem
What is a abiotic factor
The nonliving things in a ecosystem
What is overpopulation?
To many of one organism are taking over an area
What is underpopulation?
Lack of one type of species
What’s predation?
When one organism kills another organism for energy
What’s the predator
Hunts and kills another organism for food
What is prey?
Is hunted and killed by another organism for food
What is a habitat?
The place where an organism lives and that provides the things the organism needs
How do u find population density?
of individuals divided by unit area (unit area is length times width
How can population size be determined?
- Direct observation- count animals 1 by 1
- Indirect observation- counting footprints,nets, or underground animals
- Sample counts- counting the number of organisms in a small area and then multiplying to find the larger area
What some adaptions animals have made to protect themselves from predators
Bunnies who live in the snow make their fur white to blend in with the snow
Stick bugs - make themselves look like sticks to blend in
