1. Predators and Prey

2. 
Predators – animals that hunt other
animals for food.
• (Always depend on other animals for food)
Prey
– animals that are hunted

3. Hawk - Predator
Rabbit - Prey

4. Predators and Prey are connected
If prey increase – more food for
predators, more predators

predators increase – shortage of
prey, some predators won’t get
enough food, leave or die
If

5. 
In ecosystems living things compete
for resources.
– the demand for a
resource by two or more organisms
Competition

6. 
Members of different populations
compete for resources:
• deer and squirrels eat acorns
• dandelions and grass compete for space
• hawks, owls, and snakes compete for mice

7. 
If one animal or group gets too much
of a resource there may not be
enough for the other groups

8. 
Humans can destroy habitats by
building houses and buildings.
– the role of an organism in
their environment
niche
• ex – a plant is a producer