Term
| Why couldn't mars support life? |
|
Definition
| Its water may have been to salty and acidic |
|
|
Term
| Four characteristics that make life work on Earth |
|
Definition
Reproduction allows it to spread exponentially
Life uses various energy sources: plans sunlight, animals use plants
Life pollutes: organisms create waste in small amounts ok in large amounts not good at one point to much oxygen on earth
Life is versatile: different roles, evolution to use unexploited resources |
|
|
Term
| What does the biosphere consist of? |
|
Definition
|
|
Term
| What are the three other spheres? |
|
Definition
| atmosphere, hydrosphere, lithosphere |
|
|
Term
|
Definition
| individuals that if interbred would produce viable offspring |
|
|
Term
|
Definition
| all individual of one species in a certain area |
|
|
Term
|
Definition
| all individuals of a type of species in a certain area |
|
|
Term
|
Definition
| structurally distinct plant community |
|
|
Term
|
Definition
| community of living organisms and their physical enviroment |
|
|
Term
|
Definition
all Living organisms have a quadratic tolerance curve showing the ability to tolerate different environmental states, low tolerance population is low, high tolerance population is high
where curves over lap there is much competition and were they don't there is no competition |
|
|
Term
| What is the ecological optimum point? |
|
Definition
| where tolerance is highest; the independent variable value where dependent variable growth and abundace are greatest |
|
|
Term
| Describe the three species interactions |
|
Definition
competion is a lose lose
predation is a win lose
mutualism is a win win |
|
|
Term
|
Definition
| 3 levels primary is photosynthesis, next its herbavors then carnivors each succedeing level gets 10% less biomass due to respiration and that the whole orgainism may not be digested |
|
|
Term
|
Definition
| highest near the equator lowest near the high latitiudes because more NPP in the lower equator means more plants and more animals and because species evolve to specialize on certain abundant food types in high NPP areas |
|
|
