MERLOT Materials

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In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its... see more

What are the best means of reducing illegal hunting of primates? Does changing the type of livestock benefit heathland... see more

Bird identification game. Includes four Delaware habitats: backyard, grasslands, woodlands and wetlands.

This article discusses the United States' increasing vulnerability to natural disasters because of population and... see more

פעילות זו מיועדת לתלמידים לקויי למידה ובה עונים התלמידים על שאלות המתייחסות לטקסט בספר הלימוד "מישור החוף התיכון והדרומי... see more

'The Penn State Agronomy Guide is a comprehensive publication on crop and soil management and pest management for farms... see more

Democratic Energy provides the full text of "A Better Way to Get from Here to There." This piece of literature posits... see more

In August 2001 the Secretaries of Agriculture and the Interior joined the Western Governors' Association, National... see more

Although few weather phenomena have the ability to affect weather on a global scale, the jet streams are one such... see more

This site provides a technical report summarizing hundreds of research papers on this global issue. Offers definitions... see more

Scientists clean up chemicals like polychlorinated biphenyls (PCBs) with help from vegetables like pumpkins and zucchini.... see more

In this activity, learners construct a coastal landmass from sand and add features such as tidal creeks and barrier... see more

Methane is a greenhouse gas that is less abundant than carbon dioxide, but has a much more potent effect. It is also a... see more

This student guide provides an introduction to the types and value of tropical forests, deforestation, the practice of... see more

This 5-minute animation portrays fluctuations in the cryosphere through observations collected from a variety of... see more

This radio broadcast features an interview with George O'Meara, the world's foremost expert on mosquitoes, who studies... see more

Abiotic stresses such as high temperature, low-temperature, drought and salinity limit crop productivity worldwide.... see more

Abiotic stresses are the major cause that limits productivity of crop plants worldwide. Plants have developed intricate... see more

As governments begin to consider regulation of greenhouse gases, many are turning to market-based initiatives. Such... see more

En este objeto se describen los accidentes (fisiopatías) típicas que les ocurren a los cereales debidas sobre todo a... see more

A site with a collection of science experiments for kids to perform and learn about testing stream/creek water to... see more

Due to the presence of dissolved gases such as carbon dioxide, rainfall is naturally acidic. The release of other gases... see more

This activity is acid-base titration lab where students determine the percent of calcium carbonate in an eggshell.

Se describe la realización práctica del acodado aéreo y se dan recomendaciones sobre su posible utilidad.