Has the world reached its carrying capacity for humans?
No!
100
This type of succession would take place on a cooled bed of lava.
Primary succession?
100
What contributed to the change in world population during the 1900s.
better sanitation, agricultural improvements, and improved health care
100
A group of organisms of the same kind that live at the same place at the same time
A population
100
What environmental factors are considered biotic.
Living factors
200
An introduced species hunts by diving for birds, the native duck populations decrease in number. This is due to _______________.
Competitive exclusion
200
The first organism to occupy the land an example lichens is called
Pioneer species
200
Succession involves changes in which two ecological factors?
Biotic and Abiotic factors
200
The growth rate of a population includes the affects of these three things.
Birth Rate, Death Rate, and Migration Rate
200
Which environmental factors are considered abiotic?
TEMPERATURE, soil, air, sunlight
300
What is the calculation for population density?
Population divided by area.
300
This is the final stage of ecological succession.
A climax community
300
This is how climax communities are different from pioneer communities.
Pioneer communities contain few species, while climax communities have many species.
300
A herd of deer has a positive population growth. That means that the herds population will
increase in size.
300
Which environmental factors are considered biotic
All living factors. GRASS, animals, trees, etc.
400
Disease and war lead to a(n) __________ in human population size.
Decrease
400
Mt. St. Helens from the class handout is an example of which type of succession?
Secondary succession
400
1 billion = ___________millions
1000 millions
400
There are several empty seats in our classroom. We also have extra textbooks and other supplies. This would mean that we are ___________ the carrying capacity of our classroom
Below carrying capacity.
400
Calculate the population density if in an area of 30m2 there are 3 rabbits. The density =____
0.1 rabbits/m2
500
Northern Pike eat Yellow Perch. What type of relationship do Northern Pike and Yellow Perch exhibit?
Predation or Predator/Prey Relationship
500
Secondary succession begins in a place that ______.
already has soil
500
This is the maximum size of a population that the environment can support.
Carrying Capacity
500
All the silver maples in a given area make up a
population.
500
What does the graph of the growth of the world population in the past thousand years look like?