Ecosystems
A close and long-term interaction between two species in an ecosystem. (mutualism, commensalism, parasitism) CED p.44
What is symbiosis?
Excess nutrients in water causes this process, leading to algal blooms. CED p.170
What is eutrophication?
The maximum population size an environment can sustainably support. CED p.76
What is carrying capacity?
The most widely used sources of energy globally CED p.129
What are fossil fuels?
What is CO2?
The percentage of energy transferred from one trophic level to the next. CED p.53
What is 10 percent?
The stage of wastewater treatment that removes large objects and solid waste through screens, gates, and settling. CED p.178
What is primary treatment?
A line that shows the relative survival rates of a group, from birth to death CED p.75
What is survivorship curve?
Using battery electric vehicles or hybrid vehicles, using public transportation, and implementing green building design features are all methods for ________ CED p.141
What is conserving energy on a large scale?
The _____ ___ ___, formed by the Environmental Protection Agency (EPA) regulated the use of lead, particularly in fuels, which decreased the amount of lead in the atmosphere. CED p.148
What is the Clean Air Act?
The rate at which solar energy (sunlight) is converted into organic compounds via photosynthesis over time. CED p.51
What is primary productivity?
__________ from oil spills in marine waters cause organisms to die. CED p.166
What are hydrocarbons?
When a population exceeds its carrying capacity CED p.76
What is overshoot?
This renewable fuel source combines hydrogen and oxygen in the air to form water and release energy (electricity) in the process. CED p.139
What is hydrogen fuel cells?
Formed when nitrogen oxides and volatile organic hydrocarbons react with heat and sunlight to produce a variety of pollutants CED p.149
What is photochemical smog?
The rate of energy storage by photosynthesizers in a given area, after subtracting the energy lost to respiration. CED p.51
What is net primary productivity?
Do not easily break down in the environment because they are synthetic, carbon-based molecules (such as DDT and PCBs). CED p.172
What are persistent organic pollutants (POPs)?
Disease transmission, waste accumulation, and resource availability are examples of _______ dependent factors CED p.80
What is density dependent factors?
When uranium atoms split to release energy. This process releases a large amount of heat, which is used to generate steam, which powers a turbine and generates electricity. CED p.131
What is nuclear fission?
An air pollution control device for internal combustion engines that converts pollutants in exhaust into less harmful molecules. CED p.155
What is a catalytic converter?
A forest had a gross primary productivity of 8,000 kcal/m2/yr and a net primary productivity of 5,000 kcal/m2/yr. What is the producer's respiration? CED p.51
What is 3,000 kcal/m2/yr?
A chemical has an LD50 of 18mg. If 60 organisms are exposed to 18mg. How many organisms are expected to die? CED p.179
What is 30 organisms?
60 x 0.50 =30
A population of 10,000 experiences 300 births and 100 deaths in a year. What is the growth rate (%)? CED p.77
What is 2%?
(300-100)/10,000 x 100 = 2
A powerplant produces 1,200 kWh of electricity per day in 2020. In 2026, it now produces 1,500 kWh per day. What is the percent change for electricity? CED p.129
What is 25% increase?
(1500-1200)/1200 x 100 = 25
A city's NO2 concentration drops from 42 ppb to 30 ppb. What is the percent decrease in NO2 concentration. CED p.156
What is 26.6% decrease?
(42-30)/42 x 100= 28.6