Global warming and global dioxide emission: an empirical study

Article Abstract:

Global warming is positively correlated with global carbon dioxide emission. Cross-spectral and multichannel spectra analyses are used to analyze the Granger causal relationship. Causality analysis confirms the existence of Granger causality between global surface temperature and CO2 emission. The frequency domain analysis reveals that global warming is attributed to an increase in carbon dioxide emission. The increase in CO2 concentration increases global temperature and causes climatic changes.

Causes of, Environmental aspects, Observations, Global warming, Spectrum analysis, Spectroscopy, Atmospheric carbon dioxide

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Theoretical and empirical examination of density-dependent selection

Article Abstract:

Field-based and laboratory studies reveal that species' growth rates are affected by population density. Genotypes that are favored in either low- or high-density environments are negatively impacted when those environments are inverted. Adaptation phenotypes however are highly identifiable in crowded environments, indicating a trade-off between energetic efficiency and competitive ability.

Analysis, Natural selection, Population density

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Global availability of wood and energy supply from fuelwood and charcoal

Article Abstract:

Fuelwood deficiencies in large parts of the the world will continue to become critical, especially in developing countries with growing populations. These include most of Asia and the South Pacific, most of Mexico and South America, and almost all of sub-Saharan Africa.

Research, Fuelwood, Charcoal

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