Learning About Food Webs and Energy Pyramids Summary

During our activity in science class my group each made our own food chains and then together we made a food web. A food chain is a sequence of organisms, each of which serves as a source of food or energy for the next. A food web is the organisms in most ecosystems form a complex network of interconnected food chains. We also learned that as energy transfer through food chains and food webs the energy is lost. A pyramid of energy flow illustrate the energy loss. I leaned about how 10% of the energy gets lost each times it's transfers throught a food chain/ food web. A food chain / food web can start with 100 units of energy and end up with .000001. The less units of energy an animal gets after eating the more of the same thing it has to eat. In class we did an activity of an ocean food chain. It stated of with alge ( it had 100 units of energy) the next part of the food chain was a crab that ate the alge but only got 10 units of energy. Then came the squid that eats the crab and only gets .10 units of energy. At the end there's the killer whale that eats the squid and only gets .01 units of energy. That's an example of an energy pyramid. 

This is what we did in class of a food web. Each three person in my group made a food chain and put them all together. The environment for this would be a swap or wetland. 

Ecological Footprint Summary

During my science class I learned a lot from our Ecological Footprint Web Activity. Ecological footprint is the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources. In the Ecological Footprint I learned that it does matter how you live , because I did a quiz in http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/ and it showed that if everyone lived like me we would need 4.4 Earths just to resource everything! Which is a lot because in the real world we don't have 4.4 Earths we only have one which mean we need to really watch the way we do thing in this world so we can make the only earth we have last for a long time. Tracks the per-person resource demand Ecological Footprint and biocapacity in United States of America since 1961. Biocapacity varies each year with ecosystem management, agricultural practices (such as fertilizer use and irrigation), ecosystem degradation, and weather, and population size. Footprint varies with consumption and production efficiency. Where a dotted line is shown, interpolation estimates have been used in place of highly unlikely outliers in the results. (http://www.footprintnetwork.org/en/index.php/GFN/page/trends/united_states_of_america/) . The U.S have really high Ecological footprint and biocapacity. Japan has a must lower one as you can see in http://www.footprintnetwork.org/en/index.php/GFN/page/trends/japan/. I think as human beings we really have to watch how we use sources because we don't have many to relay on.