Chapter 3 Flashcards
Lithosphere characteristics
Rocks and sediment
Community
Set of population of different species in same point of time and place
Ecology
Species interactions with others and nonliving environment (abiotic)
Biosphere
Total of living things in a habitat
Population size
Same species in the same area at the same time
Population density
Per area
Benefits and risks of high density
B:protection reproduction
R: infection supply of resources hunting
Benefits and risk of low density
Resources small hunt low disease
Population distribution
Random- ex. Trees
Uniform- certain amount of space needed ex. Penguin
Clumped- ex. Fish
Population which competes for space
Uniform
Monogamous
Sex ratio 1:1
Harem
Sex ratio 1:#
Calculating population growth
(Birth rate-death rate) + (immigration -emigration)
Exponential growth rate
Nonsustainable
Non realistic model
Logistic growth
Limiting factors
-resources space diseases
