Term
| What are Foundation Species (Ecosystem Engineers)? |
|
Definition
| Species that cause major physical change in the environment |
|
|
Term
| What are keystone species? |
|
Definition
| species that are small in number but have a great effect on the environment |
|
|
Term
| What are dominant species? |
|
Definition
Species in a community which has the largest number or highest biomass Biomass - total mass of all individual in population |
|
|
Term
|
Definition
| Community of organisms interating with each other and their nonliving surroundings |
|
|
Term
| What are two types of energy conversions? |
|
Definition
Photosynthesis - changing light energy into chemical energy Cellular Respiration - changing chemcial energy into ATP |
|
|
Term
| Describe the idea of the Trophic(feeding) structure? |
|
Definition
Autotrophs (Producers) 1. Primary Producers - make own food, does photosynthesis Heterotrophs (Others) 2. Primary Consumers - heterotrophs that eat plants 3. Secondary Consumers - Heterotrophs taht eat meat 4. Tertiary Consumers - eats the secondary consumer Omnivores - eat plants and animals Detritivores - eats detritus (things that were alive but now dead) |
|
|
Term
| What is a more realistic way to represent the Trophic structure? |
|
Definition
|
|
Term
| Explain the Energy Transfer through the trophic levels |
|
Definition
1. Autotrophs undergo photosynthesis for the primary production. Primary production - amount of light energy converted into chemical energy This chemcial energy is now available for: cellular respiration (50% used) rest goes into growing (biomass) Biomass is what higher level consumers use for their energy 2. The Second Production Occurs when the Primary Consumer eats the biomass of the primary producer. The amount of energy received from this goes down even more because the primary producer only saved 50% of the energy to be consumed. The primary consumer still needs to go through cellular respiration which requires energy and store some for biomass. As you go through the levels, energy is lossed! |
|
|
Term
| How efficient is the energy transfer from lower trophic levels to higher? |
|
Definition
| very inefficient, because of the loss of energy inbetween |
|
|
Term
| What is the carbon cycle? |
|
Definition
the cycle between atmosphere, nonliving creature, and living creatures return of CO2 to atmosphere by respiration |
|
|
Term
| What causes increase of atomspheric CO2? |
|
Definition
1. Emission from fossil fuels 2. Net release of CO2 from land use change |
|
|
Term
| what is the greenhouse effect? |
|
Definition
| the trapping of heat by the atmospheric gases to keep the planet warm |
|
|
Term
|
Definition
the rising of the earths temperature |
|
|
