Ecological Organization
Group of individuals that are able to reproduce and produce fertile offspring is called a(n)...
Species
pH is considered...
How is energy different than the cycle of matter?
When energy is used, around 90% is lost as heat and continues to result in a lower energy state. Matter consistently is changed and transformed but never is lost.
Makes up the nucleic acid backbone
phosphorous and carbon
What percent of the atm. is composed of nitrogen?
around 78% of the atm.
Organisms that consume primary producers are called...
Herbivores, Primary consumers, Secondary producers
Predation of a hare by a lynx is a(n)...
biotic factor
Process by primary producers use deep underwater vents to produce carbohydrates in the absences of light is called?
Chemosynthesis
Important for protein synthesis (amino acid backbone)
Nitrogen
How do heterotrophs obtain chemical nutrients?
Consumption
Plankton that relies on photosynthesis to produce energy is called...
Phytoplankton
Is soil considered a biotic or abiotic factor?
Both because soil composition encompasses mineral elements and decomposed organic material
Amount of organic material generated by primary producers is called __________
Primary Productivity
Common limiting factor in marine ecosystems
nitrogen
Majority of nitrogen cycle takes place in ________ by ________ conversion
soil/ground, bacterial
Decomposed chemically via decomposition and recycled into the food web
What percent of primary producer energy is conserved within a third level consumer?
.1% of energy
Explain why oxygen does not have its own cycle.
Oxygen is incorporated into water, carbon, nitrogen and phosphoric cycles and cycles with each of these elements in their respective cycles
What form of nitrogen is able to be assimilated into plant biomass?
Nitrate; NO3-
Explain why a food web is ecologically more stable than a food chain
Food chains encompass an energy relationship in which one species supports each trophic level. A food web is any energy pathway of interlocking food chains in which if a single "link" is gone the structural integrity of the web is not completely broken.
What is oxygen generated by photosynthesis from a plant?
Oxygen is considered an abiotic byproduct of photosynthesis which is a biotic process resulting within a biotic specimen...yuh
Explain the movement of energy from primary producers to herbivores. What three places does energy go?
90% lost as heat
10% used in metabolism + growth and any surplus not used is transferred to herbivore when consumed
How can carbon in the atmosphere increase by human activity?
Extraction and combustion of fossil fuels, burning of forests, etc.
Explain the water cycle starting from the atmosphere
Atmosphere > condensation > precipitation > groundwater > runoff > water reservoirs > evaporation