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? Divide into groups to create your own food web games. 1) The west coast of South Africa - This is an area often associated with phytoplankton blooms. 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
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.
KidWings Biomes 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"
Food Chain & Web 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
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 Composite satellite images of the entire Earth. Earth at Night The night side of Earth twinkles with light in these composite global and regional views. Experiments Hands-on educational activities. Visible Earth A catalog of NASA images and animations of our home planet. NASA Earth Observations View, download, and analyze imagery of Earth science data. Earth Science Picture of the Day
Ornithos Atlantic Rainforest Webcam World Land Trust uses cookies to make all features of the website work effectively, and they are essential if you wish to donate online. Some cookies on this site are essential, and the site won't work as expected without them. These cookies are set when you submit a form, login or interact with the site by doing something that goes beyond clicking on simple links. We also use some non-essential cookies to anonymously track visitors or enhance your experience of the site. By using our site you accept the terms of our Privacy Policy. (One cookie will be set to store your preference) (Ticking this sets a cookie to hide this popup if you then hit close. About this tool About Cookie Control
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 Composite satellite images of the entire Earth. Earth at Night The night side of Earth twinkles with light in these composite global and regional views. Experiments Hands-on educational activities. Visible Earth A catalog of NASA images and animations of our home planet. NASA Earth Observations View, download, and analyze imagery of Earth science data. Earth Science Picture of the Day
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Go to the Gould League website to build your own food web. When you are done, complete the table in file 10. by mrskarandonis Sep 2