More immediately, the loss of trees from a forest can leave soil more prone to erosion. This causes the remaining plants to become more vulnerable to fire as the forest shifts from being a closed, moist environment to an open, dry one. Over generations, all of the species that are currently alive today have evolved unique traits that make them distinct from other species. These differences are what scientists use to tell one species from another. Organisms that have evolved to be so different from one another that they can no longer reproduce with each other are considered different species. All organisms that can reproduce with each other fall into one species. Deforestation is the purposeful clearing of forested land. Throughout history and into modern times, forests have been razed to make space for agriculture and animal grazing, and to obtain wood for fuel, manufacturing, and construction. Some areas in the world, such as areas of Mexico, South Africa, Brazil, the southwestern United States, and Madagascar, have more biodiversity than others. Areas with extremely high levels of biodiversity are called hotspots. Endemicspecies—species that are only found in one particular location—are also found in hotspots.

Animal Encyclopedia (2nd Edition): 2,500 Animals with Photos

urn:lcp:animalencycloped0000unse:epub:eb4a271b-c6fb-44ce-96da-768b79496427 Foldoutcount 0 Identifier animalencycloped0000unse Identifier-ark ark:/13960/t20d5jv1p Invoice 1652 Isbn 9781426310225 Lccn 2012023783 Ocr tesseract 5.0.0-alpha-20201231-10-g1236 Ocr_detected_lang en Ocr_detected_lang_conf 1.0000 Ocr_detected_script Latin Ocr_detected_script_conf 0.9368 Ocr_module_version 0.0.13 Ocr_parameters -l eng Old_pallet IA18960 Openlibrary_edition Discover the thousands of animals that call Earth home in this new edition of National Geographic's best-selling Animal Encyclopedia.Deforestation has greatly altered landscapes around the world. About 2,000 years ago, 80 percent of Western Europe was forested; today the figure is 34 percent. In North America, about half of the forests in the eastern part of the continent were cut down from the 1600s to the 1870s for timber and agriculture. China has lost great expanses of its forests over the past 4,000 years and now just over 20 percent of it is forested. Much of Earth’s farmland was once forests. Biodiversity is a term used to describe the enormous variety of life on Earth. It can be used more specifically to refer to all of the species in one region or ecosystem. Bio diversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects. This means that millions of other organisms remain a complete mystery.

Zoo - National Geographic Society Zoo - National Geographic Society

The next great Dog Man adventure from the worldwide bestselling author and artist Dav Pilkey. You'll howl with laughter!Access-restricted-item true Addeddate 2021-04-17 14:00:37 Associated-names National Geographic Society (U.S.) Boxid IA40089307 Camera Sony Alpha-A6300 (Control) Collection_set printdisabled External-identifier