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.
Fitting Algae Into the Food Web The food web you created in the food web game was one that is found in the Antarctic. As you might imagine, a food web in the tropics looks very different from the one you created. Environmental conditions (temperature, light, nutrients) are different in the two areas, so it would make sense that the organisms that live in those areas might be different also. What might a food web from a tropical marine environment look like? Energy Flow Through Ecosystems Summary:The objective of this lesson plan is to give students a basic understanding of how energy flows through an ecosystem by introducing them to the concepts of food chains and energy pyramids. Included in this lesson are two small group activities and a power point presentation. The power point presentation provides the students with fundamental knowledge about one way that organisms in an ecosystem interact and depend on one another.
Earth Observatory : Home World of Change Satellite images showing how our world— forests, oceans, cities, even the Sun— has changed in recent decades. Read more 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.
Earth Observatory : Home World of Change Satellite images showing how our world— forests, oceans, cities, even the Sun— has changed in recent decades. Read more Blue Marble 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.
"Pea Soup" - Pea Experiment This is an interactive pea experiment where you can breed your own hybrid pea plants! You will start with two parent plants and end up with four child plants *. Pick two of those to breed together for four new children, and so on. 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.
Mitosis: An Interactive Animation This animation demonstrates the stages of mitosis in an animal cell. Use the control buttons along the bottom to run the complete animation. Click on any intermediate stage (for example, Anaphase), and see a representative still frame.