EVS and Ecology
Published in 1962, this book by Rachel Carson exposed the dangers of indiscriminate pesticide use.
What is "Silent Spring"?
This process occurs when lakes receive excess nutrients, causing algae blooms and oxygen depletion.
What is eutrophication?
This international agreement was designed to phase out ozone-depleting substances
What is the Montreal Protocol?
The key difference between weather and climate is this measurement.
What is timescale?
This sampling technique involves laying a measuring tape in a specific direction and recording species that touch the tape.
What is a line transect?
This type of system exchanges both energy and matter with its surroundings.
What is an open system?
This international organization creates a "Red List" to determine the conservation status of species.
What is the International Union for Conservation of Nature and Natural Resources (IUCN)?
These substances are directly emitted from a process and include carbon monoxide and nitrogen oxides
What are primary pollutants?
This model describes how populations change through different stages of economic development.
What is the Demographic Transition Model?
A symbiotic relationship where both species benefit, like clownfish and sea anemones.
What is mutualism?
This ecological concept describes a system's ability to return to its original state after a disturbance.
What is resilience?
This type of diversity refers to the range of genetic material present in a gene pool within a species.
What is genetic diversity?
These special crops can add nitrogen back into the soil
What are leguminous crops? (like beans, peas, or soya)
With a Global Warming Potential much higher than carbon, this gas is primarily produced by cattle and rice paddy fields.
What is methane?
The perfect soil type for growing crops that combines different soil textures
What is loam soil?
This type of population growth curve shows exponential increase followed by a sudden collapse.
What is a J curve?
This percentage of Earth's surface is covered by water.
What is 70%?
The amount of space between soil particles
What is porosity?
This theory suggests that human population growth will be limited by food supply.
What is the Malthusian Theory?
This concept measures the area of land and water required to support a specific human population's lifestyle.
What is the Ecological Footprint?
This type of productivity represents the total gain in energy or biomass by green plants per unit area per unit time.
What is gross primary productivity (GPP)?
This measurement indicates the amount of dissolved oxygen required to break down organic material in water.
What is BOD (Biological Oxygen Demand)?
These two primary pollutants react with water to form sulphuric and nitric acids in acid deposition
What are sulphur dioxide (SO₂) and nitrogen oxides (NOₓ)?
This term describes the maximum number of individuals an environment can sustainably support.
What is Carrying Capacity?
The natural extinction rate of all species, typically measured as one species per million species per year.
What is the background extinction rate?