Population
What 2 factors contribute to decrease in population size?
death and emigration
Compare food web to food chain
Food chain is a direct relationship between organism for energy. Food web includes multiple food chains.
Resources that are being consumed faster than they can be resupplied are example of
nonrenewable
Flood and earthquake are example of what?
Density dependent population control
The variety of life in the world or in a particular habitat or ecosystem.
What is biodiversity?
Species A and B compete for the same resource
Competition
What is the r-intrinsic growth rate formula?
R-intrinsic Growth Rate = {(Birth - Death) + (Immigration - Emigration)}/current population
A food web that group the biotic organisms into trophic levels
What is a connectedness food web?
When population experience an unrestricted overshoot before limited resources, space, or disease cause a dieback. This is called what type of growth?
exponential growth
If a country has an expansive population pyramid, the country will face problem with supporting their aging population. Write True or False
false
What is the trophic level of herbivores?
primary consumers
community interaction in which both parties benefit
mutualism
Population =1,000,000
Birth = 10/1000
Death = 5/1000
Net migration = 2/1000
Calculate r-intrinsic growth rate
Population = 1000000/1000 = 1000
r intrinsic growth rate = (10-5)+2 = 7
7*1000 = 7000
7000/1000,000 = 0.007 or 0.7%
Type of species that produced a lots of babies but they tend to die early
r-selected species
Community interaction in which party A benefits from party B but party B is not harm or benefited.
commensalism