Unit 3: Populations
Which of the stages in a Demographic transition model have high birth rates and rapidly falling death rates?
Pg.81
Stage 2
Cleanest fossil fuel
Pg. 130
What is Natural Gas? (extra knowldge - mostly methane)
Greenhouse gas that doesn't contribute to global climate change
Pg. 192
What is water vapor?
Smog that forms when nitrogen oxides and volatile organic compounds react with heat and sunlight to produce a variety of pollutants.
Pg. 149
Photochemical smog
A type of ecosystem service that includes physical products obtained directly from ecosystems, such as timber, clean drinking water, and medicinal plants.
Pg. 61
Provisioning service
Which immediate consequence would a population that overshoots it carrying capacity represent?
Pg.76
Dieback due to resource depletion
An extraction method that uses high pressure fluids to crack underground shale rocks to release natural gas.
Pg. 132
Hydraulic fracturing or (Fracking)
The five principal greenhouse gases
Pg. 192
Carbon dioxide, methane, water vapor, nitrous oxide and Chlorofluorocarbon.
Primary pollutant that is emitted from the incomplete combustion of fossil fuels and binds stringly to hemoglobin, reducing the bloods ability to carry oxygen.
Pg. 153
What is carbon monoxide?
A species whose presence, absence or abundance reflects a specific environmental condition.
Pg. 66
Indicator species
Type I survivorship curves are typically representative of K or R selected species?
Pg.75
K-selected species
A resource that can be naturally replenished at the same rate or at a rate faster than its being consumed.
Pg.128
What is renewable resource?
Effect of global climate change and causes sea level rise.
Pg. 193
What is melting glaciers?
What is a catalytic converter?
The ecological process which happens in an area where an ecosystem has been disrupted by some disturbance such as a forest fire or clear cutting, but the soil remains intact.
Pg. 66
What is secondary succession.
Would a sudden volcanic eruption be a density independent or dependent factor that limits population?
Pg.80
Density Independent factor
A basic component that active solar heating systems use to collect and concentrate sunlight that passive systems do not use.
Pg.136
Solar Panels or (Photovoltaic cells)
Ocean Acidification is when the _____ decreases due to increased _______________ levels which combines with ocean water to make________________________.
Pg. 197
Ph, CO2, Carbonic acid
Fibrous silicate material once commonly used in insulating buildings that can cause lung cancer and mesothelioma when its airborne particles are inhaled.
Pg.181
What is Asbestos?
Type of ecological succession that starts off in a lifeless area without soil that starts on newly cooled lava just bare rocks.
Pg. 66
What is primary succession?
A small country has an yearly growth rate of 3.5%. If the current population is 12,000 people what will the population size be after exactly 40 years?
Pg.80
70/3.5=20 years (doubling time)
40/20=2 doublings
12,000*2=24,000
24,000*2=48,000 people
A natural gas power plant receives 100 megawatts of thermal energy from burning fossil fuel but only produces 30 megawatts of actual electricity. What is the efficiency percentage of this power plant?
Pg. 129
30%
(30MW output / 100MW input)*100
=30%
The sea level of a coastal area has risen at an average rate of 4.0 mm per year. calculate the total expected sea-level rise, in meters over the next 50 years.
Pg.193
0.2 m (meters)
4.0mm*50yrs = 200mm
Covert: 200mm*1m/1000mm = 0.2
A coal fired power plant emits 120 metric tons of sulfur dioxide SO2 per year. The plant installs a wet scrubber that is 95% efficient at removing SO2 from emissions. Calculate how many metric tons will still be emitted each year.
Pg. 155
100%-95% = 5% SO2 emissions remaining
120 metric tons x 0.05 = 6 metric tons per year
A researcher samples a forest and counts 400 individual trees across all species. If twenty-four are redwood trees, calculate the relative abundance (percentage) of redwood in this forest community.
Pg. 60
6%
(24/400) / 4 = 6/100 =6%