Nutrient Cycles
What is the major reservoir for Nitrogen?
Atmosphere
What is carrying capacity?
the maximum number of individuals that an environment can sustain over time without destroying or degrading the environment
What is an example of a producer?
A plant.
What is the difference between biotic and abiotic?
Biotic is all living things
Abiotic is all nonliving things
What is the major reservoir for Water?
Ocean
What is biotic potential?
Maximal reproductive potential with unlimited resources, maximum number of individuals you could get of that species with unlimited resources
What are autotrpohs?
Organisms that make their own food
Which ecosystem has greater biomass, Rainforest or Desert?
Rainforest
What are the major reservoirs for Carbon?
Atmosphere, Ocean, Fossil Fuels
What is the difference between a community and a population?
Population- groups of individuals belonging to the same species that live in the same region (ecosystem) at the same time
Community- all living members, all populations in that ecosystem
Herbivores would be what level of consumers?
Primary Consumers
What are the PRODUCTS of photosynthesis?
Glucose, Oxygen
What is the major reservoir for Phosphorous?
Rocks
What is environmental resistance? Name the two types
Any condition that inhibits population growth, keeps the species from reaching biotic potential
Density Dependent is dependent on the amount of organisms there are (disease, competition)
Density Independent is not dependent on the amount of organisms (drought, flood, fire)
What is the Rule of 10?
Energy is transferred from one level to the next
90% is lost from one level to the next
Ex.?
A carnivorous plant, such as a sundew, may be considered, both a ____ and a ____ when it eats a carnivorous spider?
Producer and Tertiary Consumer
Are nutrients recycled? Energy?
Nutrients are recycled, energy is not
What are the 2 types of population growth and describe. (S or J)
S curve- logistical, overshoot and stabilize, most common
J curve- exponential, boom and bust, reindeer example
A field of grass has 1000 calories. A grasshopper eats the grass, a spider eats the grasshopper, and a bird eats the spider. How many calories does the bird get?
1 calorie
Describe how phylogenetic trees work.
A diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor
Each new branch is a new trait that's added