Populations 1
Populations 2
Populations 3
Populations 4
THUNDERDOME
100
Carrying Capacity:
Maximum number of individuals an environment can sustain.
100
How do limiting factors affect carrying capacity?
They lower it
100
Name the four main factors that affect population size
birth/death rate; immigration/emigration
100
What happens to the growth of a population when resources are unlimited?
exponential growth
100
Who is this FSU graduate?
Burt Reynolds
200
What is needed for a population to go through exponential growth?
Resources. A lot of them.
200
What happens to a population when it reaches carrying capacity?
It stays at or near its maximum size.
200
Name 6 limiting factors:
disease, parasitism, over-crowding/ natural disasters, competition, predation
200
Describe the 3 steps of logistic growth and EXPLAIN why each step occurs.
Population rises rapidly due to abundant resources. Population slows as they near carrying capacity (resources are not as abundant) - Population reaches carrying capacity when growth stops.
200
Name this album AND the band
Dark Side of the Moon
Pink Floyd
300
A group of beetles are spread out in small groups in the forest. What is this describing?
Population distribution
300
Explain the difference between logistic and exponential growth
Logistic: rapid growth, slows, then settles; exponential: a period of rapid growth
300
What characteristics do ecologists use to study populations? (3)
Population density, population distribution, age structure
300
A scientist is using a computer model to predict changes to a population of rabbits in a meadow. Identify 4 pieces of information about the rabbit population that should be included in the computer model. (Cannot be the 'four' basic factors)
Age of the rabbits, how many old, how many young. Gestation period. How many males, how many females. How many offspring can each reproduction cycle have?
300
Name this actor and movie.
Mission Impossible. Tom Cruise.
400
A population is experiencing exponential growth. What must happen eventually?
The population will slow and eventually reach carrying capacity.
(Logistic Growth)
400
Explain how you can tell if a population is growing or shrinking from an age structure chart:
More young than old = growing / More old than young = shrinking
400
Name four density dependent limiting factors along with 4 density independent limiting factors:
disease, over crowding, predation, competition ; hurricane , flood, forest fire, earthquake
400
Can carrying capacity change? Explain:
The amount of resources
400
Name this creature
Bantha
500
Give three factors that could explain why some countries are experiencing lower birthrates while others have very high birthrates
Some countries have high resources. Some have low resources. Some have different cultures that encourage low or high birthrates.
500
A species of turtles live in a pond with abundant resources. Name three things that could cause the population to go extinct:
Human activity ; Carrying capacity drops ; Natural disasters
500
What does this chart represent? Explain what is happening at 'A' , 'E', and 'C'
Logistic Growth
A= initial slow GROWTH
E = exponential growth period
C = starting to slow / reach carrying capacity
500
Explain what each chart is representing for the population of Japan in terms of growth. 
Growing rapidly, stable/ slow decline , shrinking
500
Name this actor from "The Good, the Bad, and the Ugly"
Clint Eastwood