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HintAnswer
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
Six Elements that are the major constituents of living tissues and account for 95% of the biosphere
The limiting nutrient in terrestrial systems
The limiting nutrient in aquatic systems
Too much of that limiting nutrient leads to
The ratio of 15N:14N (expressed as δ15N) is indicative of trophic position because?
The chemical form of CO2 can dictate its effect, what kind of forms can this be displayed as?
Type of system where energy and matter are exchanged with surroundings
Type of system where energy but NOT matter is exchanged with surroundings
the complex community of organisms and its environment interacting and functioning as an ecological unit
Abiotic components play an important role in determining how the living or ______ components of ecosystems are distributed
ability of an ecosystem to withstand change
ability of an ecosystem to recover to the original state following a disturbance (e.g., forest after a forest fire)
an often irreversible shift in the behavior of a natural system
Environmental degradation has time delays between our actions now and the deleterious effects later. Some examples are:
a system of two or more connected reservoirs, in which material (or energy) is transferred in a cyclical fashion.
time the material remains in the compartment
Big 5 Gases Contribution to warming Anthropogenic Sources Natural Sources and sources
Big 5 Gases Contribution to warming Anthropogenic Sources Natural Sources and sources
Big 5 Gases Contribution to warming Anthropogenic Sources Natural Sources and sources
Big 5 Gases Contribution to warming Anthropogenic Sources Natural Sources and sources
Big 5 Gases Contribution to warming Anthropogenic Sources Natural Sources and sources
What is defined by 1. The ability of a gas to absorb infrared radiation – Radiative efficiency 2. The lifetime of a particular gas in the atmosphere
HintAnswer
a system of two or more connected reservoirs in which material is transferred in a cyclical fashion, or a way of understanding and modeling where substances come from, where they g
avg length of time an element remains in a compartment
Steady state
problems that arise due to disruptions in the biogeochemical cycle
The cycle that is an important transport medium transport medium for things like carbon, nutrients, contaminants
uptake of CO2 from the atmosphere, emits O2. Occurs by primary producers
_________ by organisms returns CO2 to the atmosphere
Net Primary Productivity (NPP) = ____ Primary Productivity (GPP) – Respiration by Autotrophs
Carbon cycles has functions on multiple timescales: Short =rates of photosynthesis and respiration, Medium= rates of deposition and burial of organic matter, Long= rates of _______
CO2 in the _______ is the most important global C pool because of its role in the global greenhouse effect and because C is needed for photosynthesis
Calculating MRT:
Nitrogen fixation occurs in 2 ways:
_______ (industrial process used to fix nitrogen): has tremendously increased the amt of reactive N cycling near the earth’s surface, used to manufacture fertilizer a
Nutrient over-enrichment = algal blooms = ______
2 major sources of mercury release
Natural sources of mercury release
: accumulation of substance in an organisms body over time because their body is not efficient at excreting these substances
the increase in concentration of a substance in living organisms as it moves up the food chain
process leading to a higher concentration of a substance in an organism than in its surrounding environment- combined effect of bioaccumulation and biomagnification
Mercury can arrive in the arctic via
Three factors exert most influence on climate
drives temp change on earths surface, in cycles- i.e glacial and interglacial periods
periodic changes in earths rotation (precession, obliquity, eccentricity)
precession
obliquity
eccentricity
reflectivity of earths surface of incoming solar radiation. i.e if contents were covered in ice the avg temp would be 0 degrees C, as opposed to 15
HintAnswer
aerosols______ albedo of atmos.
Albedo depends on ______, or ______ changes
absorption of infrared energy leads to warming of the troposphere and ultimately the planets surface
atmospheric gases that absorb infrared radiation. Intensity depends on concentration, atmospheric lifetime, and radiative efficiency. i.e carbon dioxide, methane, nitrous oxide,
the amount of change in energy that a factor causes. Positive forcing warms the surface, negative forcing cools it. The amount of this has increased so much as to alter the clima
microscopic droplets and particles that have either warming or cooling effects, i.e black carbon or sulfate
the global ocean circulation system
The flow of the _______ is equivalent to that of 100 amazon rivers
the relative ability of one molecule of a given greenhouse gas to contribute to warming- expressed in relation to carbon dioxide (potential=1)
long life times and high radio efficiency, extremely potent GHG but present at low concentrations
Major assessment reports have 3 components:
4 lines of climate change proof
4 lines of climate change proof
4 lines of climate change proof
4 lines of climate change proof
Global avg sea level change caused by 3 things
Global avg sea level change caused by 3 things
Global avg sea level change caused by 3 things
The ________ has experienced the most notable effects of climate change
oceans are _______ (such betches)
Increased ocean acidity can lead to
if we reduce emissions it will cost a lot, if emissions continue to rise it will cost a lot, therefore the whole climate change issue is an economic issue
3 Types of Climate change action:
3 Types of Climate change action:
3 Types of Climate change action:
Changes in polar ice caps result in:

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