background preloader

Zoology/ ecology/geology/geography

Facebook Twitter

Géographie. OISEAUX. Dossier sur les insectes - Le scarabée. Le Scarabée fait partie de la famille des coléoptères polyphages. Ce nom désigne tous les insectes munis d'antennes avec des lamelles sur le côté pouvant s'écarter.Le plus grand scarabée du Monde, appelé Scarabée Goliath d'Afrique, mesure près de 10 centimètres de long ! Scarabée Goliath Cet insecte aux jolis couleurs se nourrit des excréments d'autres insectes herbivores. Il en fait des boules qu'il enterre pour faire des provisions.

Amulette. Poules et Poulaillers. Quel est donc cet oiseau ? Identifier les oiseaux du jardin en hiver. Nous avons complété notre article avec le Moineau friquet, une espèce moins connue et plus rare que le Moineau domestique, et que l'on peut parfois observer dans les jardins. Les oiseaux des jardins en hiver et au printemps : des différences Paradoxalement, en Europe de l'Ouest, on observe généralement davantage d'espèces d'oiseaux dans son jardin en hiver qu'au printemps, car les oiseaux sédentaires sont alors rejoints par d'autres venus de contrées plus nordiques, chassés par le gel et/ou l'absence de nourriture.

Si vous mettez à leur disposition de la nourriture et de l'eau (lire Comment nourrir les oiseaux l'hiver ?) , la variété et les effectifs des espèces augmenteront considérablement. Observer les comportements Les comportements de chaque espèce sont variables, et cela peut déjà constituer une première aide pour les identifier : Des oiseaux que l'on ne peut pas confondre Moineaux domestique et friquet Des espèces vert et jaune Différentes mésanges Deux beaux passereaux avec du rouge. Elevage poules. Amazing Planet. ‹ Previous PhotoNext Photo › Paris, France Send as postcard | Request for quotes 123456…40Next › Amazing Planet. ‹ Previous PhotoNext Photo › Strokkur Geyser, Iceland Send as postcard | Request for quotes ‹ Prev1…1617181920…40Next ›

Geocube - The world of Geography at your fingertips. Fish. Europe: Cartes géographiques gratuites, cartes géographiques muettes gratuites, cartes vierges gratuites, fonds de cartes gratuits. Chouettes et hibous. Batraciens. Les animaux recycleurs. Certains animaux sont les alliés discrets de nos jardins. Généralement de très petites tailles voire parfois microscopiques ils abattent cependant une somme de travail énorme dans la fragmentation de tous les détritus augmentant ainsi la capacité des déchets à se décomposer de façon naturelle. Cette décomposition résultant du passage des recycleurs va induire la formation de composés minéraux assimilables par les végétaux. Certains sont nécrophages et débarrassent le sols des cadavres, d’autres sont saprophage ou détritivores et se nourrissent des débris végétaux ou animaux, enfin certains sont coprophage c'est-à-dire qu’ils mangent les excréments.

Petit tour d’horizons de ces bestioles bien utiles. Parmi les plus gros on trouve le cloporte qui vit dans des endroits sombres et humides, sous les pierres, les vieilles souches d’arbres, ou sous les feuilles qu’il colonise. Autre grand classique du recyclage des sols : les vers de terre que l’on peut différencier en deux groupes. Lire aussi. Quel est donc cet oiseau ? Oiseaux d'Europe-Oiseaux vivant en Europe. Ecology. The world as 100 people. British Isles. Healing Herbs Reference Database.

Rocks & Minerals. Astronomy. DIY Plant Containers. Medicinal Herbs. History and Geography. Container Gardening. Shroom Grow. Geography. Great Britain Map. GEOGRAPHY.

Nausicaa. ANIMALS. Geology. Misc Maps. 12 Real Parasites That Control the Lives of Their Hosts. Odyssey - Maps + timelines. The World Factbook. People from nearly every country share information with CIA, and new individuals contact us daily. If you have information you think might interest CIA due to our foreign intelligence collection mission, there are many ways to reach us.

If you know of an imminent threat to a location inside the U.S., immediately contact your local law enforcement or FBI Field Office. For threats outside the U.S., contact CIA or go to a U.S. Embassy or Consulate and ask for the information to be passed to a U.S. official. Please know, CIA does not engage in law enforcement. In addition to the options below, individuals contact CIA in a variety of creative ways. If you feel it is safe, consider providing these details with your submission: Your full name Biographic details, such as a photograph of yourself, and a copy of the biographic page of your passport How you got the information you want to share with CIA How to contact you, including your home address and phone number. Latin American and Caribbean countries. European Union countries.

Member countries of the EU (year of entry) The European Union has 28 member countries: On the road to EU membership Candidate countries Potential candidates Bosnia and Herzegovina Kosovo * * This designation is without prejudice to positions on status, and is in line with UNSCR 1244/99 and the ICJ Opinion on the Kosovo declaration of independence Joining the EU Becoming a member of the EU is a complex procedure which does not happen overnight. Map.

Asian countries. Learn about ADB activities in member countries and regional offices. Get information on country economic data and analysis, development assistance, and regional initiatives. indicates that ADB has a resident mission in that country. * Developing members: Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, Cook Islands, People’s Republic of China, Georgia, India, Indonesia, Fiji, Hong Kong, China, Kazakhstan, Kiribati, the Republic of Korea, Kyrgyz Republic, Lao People’s Democratic Republic, Malaysia, Maldives, Marshall Islands, Federated States of Micronesia, Mongolia, Myanmar, Nauru, Nepal, Pakistan, Palau, Papua New Guinea, Philippines, Samoa, Singapore, Solomon Islands, Sri Lanka, Taipei,China, Tajikistan, Thailand, Timor-Leste, Tonga, Turkmenistan, Tuvalu, Uzbekistan, Vanuatu, Viet Nam Some members enter a new phase in their relationship with ADB as defined under the Classification and Graduation Policy.

African countries. MenuSearchLanguage English | Français Home » Countries Countries In this section Djibouti Kenya Rwanda Uganda Explore what we do Sectors Topics Select a country Explore our activities © 2014 African Development Bank Group Web design agency - Liquid Light. Prehistoric World, Prehistoric Time, Photos Videos, Maps, Facts, Images, and More. History of the Earth. The history of the Earth concerns the development of the planet Earth from its formation to the present day.[1][2] Nearly all branches of natural science have contributed to the understanding of the main events of the Earth's past. The age of Earth is approximately one-third of the age of the universe. An immense amount of biological and geological change has occurred in that time span.

The first life forms appeared between 3.8 and 3.5 billion years ago. The earliest evidences for life on Earth are graphite found to be biogenic in 3.7 billion-year-old metasedimentary rocks discovered in Western Greenland[3] and microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia.[4][5] Photosynthetic life appeared around 2 billion years ago, enriching the atmosphere with oxygen.

Life remained mostly small and microscopic until about 580 million years ago, when complex multicellular life arose. Geologic time scale[edit] Millions of Years First continents[edit] Geologic time scale. The geologic time scale (GTS) is a system of chronological measurement that relates stratigraphy to time, and is used by geologists, paleontologists, and other earth scientists to describe the timing and relationships between events that have occurred throughout Earth's history. The table of geologic time spans presented here agrees with the nomenclature, dates and standard color codes set forth by the International Commission on Stratigraphy.

Evidence from radiometric dating indicates that the Earth is about 4.54 billion years old. The geology or deep time of Earth's past has been organized into various units according to events which took place in each period. Different spans of time on the GTS are usually delimited by changes in the composition of strata which correspond to them, indicating major geological or paleontological events, such as mass extinctions. Terminology[edit] History and nomenclature of the time scale[edit] Graphical representation of Earth's history as a spiral. Geologic time scale. Online exhibits Geologic time scale Take a journey back through the history of the Earth — jump to a specific time period using the time scale below and examine ancient life, climates, and geography.

You might wish to start in the Cenozoic Era (65.5 million years ago to the present) and work back through time, or start with Hadean time (4.6 to 4 billion years ago)* and journey forward to the present day — it's your choice. [Note: "mya" means "millions of years ago"] Ways to begin your exploration: Use the links in the "time machine" below and explore a specific period that interests you.Read more about the geologic time scale, its origins and its time divisions.Find out more about plate tectonics, an important geological concept in any time period! Prehistoric Time Line, Geologic Time Scale, Photos, Facts, Maps, and More. Geology Entrance. You might wish to start in the Cenozoic Era (65 million years ago to the present) and work back through time, or start with Hadean time (4.5 to 3.8 billion years ago) and journey forward to the present day.

No matter "when" you start, don't forget to stop along the way to learn about the stratigraphy, ancient life, fossil localities, and tectonics of the various time periods. Here are three links that can help to speed your journey: 1) Get helpful hints on navigating the Geology Wing. 2) Read about the history of the geologic time scale, and find out more about how it is organized. 3) Jump to a specific time period using the UCMP Geological Time Machine. Last but not least, don't forget to visit our exhibit on Plate tectonics, an important geological concept in any time period!

Prehistory. Prehistory (meaning "before history", or "before knowledge acquired by investigation", from the Latin word for "before," præ, and historia) is the span of time before recorded history or the invention of writing systems. Prehistory refers to the period of human existence before the availability of those written records with which recorded history begins.[1] More broadly, it can refer to all the time preceding human existence and the invention of writing. The notion of "prehistory" began to surface during the Enlightenment in the work of antiquarians who used the word 'primitive' to describe societies that existed before written records.[2] The first use of the word prehistory in English, however, occurred in the Foreign Quarterly Review in 1836.[3] The occurrence of written materials (and so the beginning of local "historic times") varies generally to cultures classified within either the late Bronze Age or within the Iron Age.

Definition[edit] Stone Age[edit] Paleolithic[edit] uninhabited. Evolution of Life. History of the Earth. Animals, Birds & Fishes. Seeds. Crystals and Gemstones. Crystals and Gemstones. Permaculture. The Homesteader's Free Library. Anthropology, Arkeology and History.

Geography

Geology. Ecology. Zoology. Atlas géographique mondial. Les premiers résultats d’analyse de roc de Curiosity. Le Jet Propulsion Laboratory a affiché sur son site les premiers résultats d’analyse du roc Jake Matjevic. Ce roc avait fait l’objet d’une analyse par la Chemcam (analyse à distance suite a vaporisation de surface du roc par tir laser) les 21 et 24 septembre. Matjevic était le 30 ème roc à faire ainsi l’objet d’un tir Chemcam.

Mais il a également fait l’objet, le 22 septembre, d’une analyse par le spectromètre à particules alpha monté au bout du bras télémanipulateur, dont c’était la première opération. Les mesures ont indiqué du diopside, une variété de pyroxène caractéristique d’une roche ignée c'est-à-dire créée sous la croûte d’une planète par cristallisation d’un magma riche en eau sous pression élevée. Le roc Jake Matjevic.

Les points rouges indiquent les endroits qui on fait l’objet d’un tir Chemcam et les cercles violets les endroit qui ont été analysés par le spectromètre alpha. (Doc. Résultats d’analyse Chemcam révélant la composition du roc. Zoom sur la montagne centrale. Deep/Hidden internet search. Home - The website and the movie, THRIVE, are the result of Foster Gamble's lifelong quest to discover how human beings can thrive on Planet Earth. Top 10 Major Historic and Significant Maya Archeological Sites.

Video.

Recovery