Earth Floor: Biomes There are many different kinds of plants and animals on the Earth, but only certain kinds are naturally found at any particular place. (We are not counting zoos here!) For example, cacti are found in the desert, polar bears are found in the Arctic, and elephants are found in central Africa and India. So, why don't people living in south Texas have to be on the lookout for snow leopards, or why don't kids in Minnesota have to worry about finding giant boa constrictors in their back yards? It is because these animals are not adapted to live in the average weather conditions found in Texas or Minnesota. These average weather conditions, such as the range of temperature and rainfall that typically occur in a particular location like Minnesota, are called the climate of that location. Plants and animals don't live in isolation, but they live together with other plants and animals in an interdependent group called an ecological community. Next
A Science Odyssey: You Try It: DNA Workshop An embryonic cell divides again and again. Where there was one cell there are two, then four, then eight,... Each holds all the genetic information needed to create a human being. How, exactly, do these cells make copies of themselves? Hair grows from your head, nonstop, day in and day out. The answers to these questions are DNA replication and protein synthesis. Knowledge of the structure of DNA began with the discovery of nucleic acids in 1869. The activity in this section places you within the cell, involving you with the processes of DNA replication and protein synthesis. If you're interested in finding out more about DNA and protein synthesis, check out the other sections. Related People and Discoveries entries
Interactive Animal and Plant Cells Nucleolus: The prominent structure in the nucleus is the nucleolus. The nucleolus produces ribosomes, which move out of the nucleus and take positions on the rough endoplasmic reticulum where they are critical in protein synthesis. Cytosol: The cytosol is the "soup" within which all the other cell organelles reside and where most of the cellular metabolism occurs. Though mostly water, the cytosol is full of proteins that control cell metabolism including signal transduction pathways, glycolysis, intracellular receptors, and transcription factors. Cytoplasm: This is a collective term for the cytosol plus the organelles suspended within the cytosol. Centrosome: The centrosome, or MICROTUBULE ORGANIZING CENTER (MTOC), is an area in the cell where microtubules are produced. During animal cell division, the centrioles replicate (make new copies) and the centrosome divides. Centriole (animal cells only): Each centriole is a ring of nine groups of fused microtubules.
Biomes of the World - Biome Map Click on a biome on the above graph for more information, informative videos, and links to scientist profiles, travel information, lesson plans and species profiles for each region. We'd like to know where you're coming from. If you've used this site for a class project or browsing for fun, add yourself to our map and communicate with other "ecogeeks"
Gizmos! Online simulations Bill Moyers Reports: Earth on Edge - Ecosystems Ecosystems are communities of interacting organisms and the physical environment in which they live. They are the combination and interaction of the plants, animals, minerals, and people in any given area of the Earth. A small bog, a single sand dune, or a tiny patch of forest is an ecosystem. But ecosystems are also forests covering thousands of kilometers, a major river system, a desert. In our heavily industrialized societies, work, religious expression, and recreation often take place in urban areas. It is our very reliance on ecosystems that is threatening them. For comprehensive data about the world's ecosystems, visit EarthTrends at www.earthtrends.wri.org/. Take our Interactive Quiz to see how much you know about ecosystems, then check out our Get Involved section to learn about ways you can make a positive difference in your home, your community, and your world.
Welcome to Ecosystems for Kids! - BSC Science Treasures Definitons Interesting Facts YoU mAy Be WoNdErInG wHaT eXaCtLy An EcOSyStEm iS..... An ecosystem is a group of plants, animals, and other living things that live in the same surroundings. An ecosystem also includes nonliving materials—for example, water, rocks, soil, and sand. BiOmEs A biome is a large area with similar microorganisms.Each of these large communities contain species that are adapted to its varying conditions of water, heat, and soil. Check it out! An Introduction to Ecosystems Africam:Check out what goes on in an African Savanna! Brazil cam: Check out what goes on in a Brazilian Rainforest! Buenaventura Webcam:See whats happening in the cloud forest in Ecuador More About Ecosystems
Journey to Planet Earth . Ecosystems We are intimately familiar with ecosystems. They are the woodlands where we live, hunt, cut timber, or hike; the lakes, streams, and rivers we fish, boat, transport our goods on, and tap for water; the rangelands where we graze our cattle; the beaches where we play, and the marine waters we trawl; the farmlands we till; even the urban parks and green spaces we stroll. In effect, every centimeter of the planet is part of an ecosystem. Ecosystems are: They are systems combined of organic and inorganic matter and natural forces that interact and change. When talking about ecosystems, the matter of scale or size is important. A small bog, a single sand dune, or a tiny patch of forest may be viewed as an ecosystem, unique in its mix of species and microclimate — a microenvironment. In World Resources 2000-2001, "ecosystem" refers to an even larger concept — categories of ecosystems. However, the divisions between ecosystems are less important than the linkages between them.
Biomes Webquest - Mr. James 5th Grade "Make Me Fit" A WebQuest for 5th Grade Biomes and Adaptations Introduction | Task | Process | Evaluation | Conclusion Introduction to Biomes The world is made up of many different biomes. 1) Tundra 2) Taiga 3) Rain Forest - tropical and temperate 4) Desert 5) Grasslands - tropical and temperate 6) Temperate Deciduous Forest A biome is made of many similar ecosystems. Within each biome, the living organisms have adaptations to help them survive in these sometimes extreme environments. The unique climate and living conditions of each biome create wide variety on our wonderful planet. Task You are an ecologist who discovered a new animal in the Polar biome. Process 1. Blank World Map Biomes of the World 2. 3. 4. 5. Evaluation of Relocation Application Enrichment and Extension Activities Create biome posters to illustrate the differences found in the climate, landforms, plants, and animals. Footnotes: Images: Top of page: Globe: Microsoft clipart
WebQuest 5th Grade Science Introduction You have a new summer job working for a travel agent. You have been hired to create brochures and posters that will persuade travelers to visit a specific geographical biome. You have the opportunity to be extremely creative for the summer! Back to top The Task Working in groups of three or four, divide up the task of researching one of the six biomes: Tundra, Taiga, Temperate Deciduous Forest, Tropical Rain Forest, Grasslands and Desert. The Process First, meet with your assigned group and read through the entire webquest. Criteria Brochure Brochure Template Each group member will create a brochure. Name of biome Labelled map illustrating biome location(s) Landforms Animal life Plant life Climate Your brochure must be edited and assembled in a neat, organized manner. Poster Your poster may be drawn and colored or made with cut and pasted pictures, but must include the following: Biome name Landforms Prevailing precipitation obvious Ten animals Ten plants Resources
Infopacket: Biomes Scientists divide the world into large natural areas called biomes. Each biome is known for certain kinds of plants and animals. But what’s really at the heart of a biome is its climate. In this downloadable Spotlight, get 8 packed pages of information about the world’s major biomes. An ideal curriculum supplement, this free infopacket includes full-color photos and a 5-question assessment with answer key.