Semester 1
Living reservoir
Biosphere
Emigration>Immigration
Negative Net Migration
16x4
64
A sample was done of the quadrangle at school and 6 dandelions were found in a 0.50m2 sample. The total size of the field is 300m2. Estimate the total population of dandelions in the field
3600
A class contains 11 boys and 22 girls. What percentage of the class is made up of boys
33.3%
Layer in the atmosphere with the highest concentration of ozone
Stratosphere
Free Mark
+1
Calculate Population Percent Change
Population in 2000=59,000
Population in 2001=58,800
-0.33898%
Breana caught 200 spiders, marked and released them. She returned and caught 300 of which 100 were marked. Estimate the N
600
In 2000 there were 5,200 births in a city of 500,000 calculate the crude birth rate
10.4
Ability of population to increase
Biotic Potential
Short term reversible physiological response to a change in environmental change
Calculate the abundance of species B in the following ecosystem
A=90
B=65
C=55
30.95%
Free Mark
+1
Population in 2008=270
B=50, D=25, I=60, E=30
Population in 2009=?
325
The formation of new and distinct species in the course of evolution
Speciation
Estimate or average number of years an individual can expect to live. Attributed to impacts by the individual and their personal health history, genetics and lifestyle
Life Expectancy
If a population of 12,000 experiences 200 births, 50 deaths, 10 immigrants and 30 emigrants in a year, what is the net annual percentage growth rate?
1.08%
If the birth rate is 25, the death rate is 5, immigration rate is 40 and emigration rate is 10, what is the growth rate?
5
Calculate net migration
Immigrants=200
Emigrants=150
Total population=2000
25
Maximum population that a given habitat can support without the habitat being degraded
Carrying Capacity
LEDC stands for
Less economically developed country
Calculate the population growth rate
B=200, D=300, I=75 and E=100
Total population=6500
-1.92%
The population of Berlin in 2008 was 292,200. The rate of growth of the population was 0.2%. Calculate the population in 2009
292,784.4
Population in 2007 for Country X: 6,273,196
Population growth rate 2008: 1.4%
Population growth rate 2009: 1.5%
Calculate the population for country X in 2009
6,456,436.055