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Comparing Carbon Calculators part of Examples
Carbon calculators, no matter how well intended as tools to help measure energy footprints, tend to be black boxes and can produce wildly different results, depending on the calculations used to weigh various ...

Earth System Topics: Human Dimensions:Energy, Climate, Biosphere:Ecology, Human Dimensions:Policy, Atmosphere

The Modern Atmospheric CO2 Record part of Examples
Students compare carbon dioxide (CO2) data from Mauna Loa Observatory, Barrow (Alaska), and the South Pole over the past 40 years to help them better understand what controls atmospheric CO2.

Earth System Topics: Atmosphere, Climate, Biosphere, Earth's Cycles:Carbon Cycle

Earth's Radiation Budget: Part 1 part of Examples
In this activity students explore the Earth's radiation budget using Earth radiation Budget Experiment (ERBE) data archived at the IRI/LDEO Climate Data Library (more info) .

Earth System Topics: Biosphere:Ecology, Earth's Cycles, Climate, Atmosphere

Global Temperatures part of Examples
Students analyze the global temperature record from 1867 to the present. Long-term trends and shorter-term fluctuations are both evaluated.

Earth System Topics: Atmosphere:Weather, Atmosphere, Climate

Phenylketonuira part of Examples
In this activity, students are assigned different alleles of the gene for phenylalanine hydroxylase to research using OMIM (Online Mendelian Inheritance in Man). They are then asked to both explain and illustrate how this mutation may cause the disease phenylketonuria (PKU).

Earth System Topics: Evolution, Biosphere

Monohybrid Fruit Fly Crosses: A Simulation part of Examples
This assignment uses a computer simulation of fruit fly genetics to have students design and interpret monohybrid crosses of a trait with simple dominant and recessive alleles. Detailed instructions with animated examples, background material, a sample report and a rubric are included.

Earth System Topics: Evolution

Long Term Ecological Resources part of Examples
Students analyze data on temperature and precipitation collected from 26 different Long Term Ecological Research sites and compare them with annual net primary productivity. The students then form an ecological rule to explain their results.

Earth System Topics: Biosphere, Human Dimensions, Biosphere:Ecology

Protein Evolution part of Examples
In this activity students explore the evolution of proteins by comparing 2D and 3D alignments of orthologs and paralogs.

Earth System Topics: Biosphere, Evolution

Sun Spot Analysis part of Examples
Introductory students use Excel to graph monthly mean Greenwich sunspot numbers from 1749 to 2004 and perform a spectral analysis of the data using the free software program "Spectra".

Earth System Topics: Climate, Solar System and Astronomy, Atmosphere

Water Quality-Total Dissolved Solids part of Examples
Students use a microcomputer connected to a conductivity probe to measure the total dissolved solids in local area water samples.

Earth System Topics: Solid Earth:Earth Materials, Human Dimensions:Environmental Quality, Oceans:Marine Chemistry, Hydrology, :Surface Water, Human Dimensions:Resources

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