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Related Concept Videos

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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
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Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
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Related Experiment Video

Updated: Oct 4, 2025

Protocol for Assessing the Relative Effects of Environment and Genetics on Antler and Body Growth for a Long-lived Cervid
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Massive wolf kill disrupts long-running Yellowstone park study.

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    Summary

    This study explores the impact of environmental factors on cellular processes. Our findings highlight key mechanisms influencing cellular health and disease progression.

    Area of Science:

    • Cellular Biology
    • Environmental Science

    Background:

    • Understanding cellular responses to environmental stimuli is crucial for disease research.
    • Previous studies have identified several pathways involved in cellular adaptation.

    Discussion:

    • This research investigates the intricate relationship between environmental exposures and cellular function.
    • We analyzed molecular mechanisms underlying cellular stress responses and their implications.

    Key Insights:

    • Environmental factors significantly modulate key cellular signaling pathways.
    • Specific exposures were linked to altered cellular metabolism and gene expression patterns.

    Outlook:

    • Further research can elucidate targeted interventions for environmental health.

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  • This work provides a foundation for developing strategies to mitigate environmental impacts on cellular health.