Friday, October 26, 2012

Biofuels and Food Production



Biofuels impact food production because biofuels are basically ethanol, things that come from plants, so it is ovbiously that if it comes from plants and to make some kinds of food we make plants, so fod can grow in, it will impact on food production
we grow  crops to make biofuels and you can find that out in the National Geographic article call ''Clearing Land for Biofuels Makes Global Warming Worse''.



Even corn is not the only way we can make ethanol as show on the same article it is (in simple and easy words) and easy and faster way to make it. The world will need more cropland to feed everyone with food crops increasingly being turned into fuels.


Friday, October 12, 2012

Pesticides!


Pesticides are used to kill the crop invaders. These pesticides are sprayed on the crops where they remain. These crops are sold to the public and used in the production of animal feed and other byproducts.
The crops are the same ones we buy at market to eat. The bugs are gone but the chemicals are not. We are ingesting these chemicals which were used to kill living organisms.
These crops are used in the preparation of feed and produce which is marketed to humans. Animals are eating the byproducts and humans are eating the produce and both are retaining the chemical in their bodies. Then the humans eat the animals and get dosed again with the chemical. Humans have all these toxins in their bodies and are slowly being poisoned. And it's not just land creatures.
Washing and pealing don't clear it away completely. Washing doesn't get everything off. Still you need to wash all fresh fruit and vegetables to clean them as much as possible. Pealing doesn't get everything off because it can grow through the vegetables. The other problem with pealing is that many of the nutrients that we want from the fruit are stored in the skin, so pealing reduces the benefit to your body.


Monday, October 1, 2012

Permeability & Porosity!♥


As everyone in our Environmental Science class know: porosity, permeability and retention are related one to another. Here are the meanings for each one;







Porosity: Volume of water that fits between the soil particles.

Permeability: Rate of flow of water through soil.

Retention: How much water is 'trapped' by soil.





Porosity and Permeability are directly related, when one is high the other is high too, and percent water retention is inversely related to both. We can see those things on common or not in the last lab we did. Just seeing the numbers on the data you see their are related, I don't remember really well the data because I turn in it but the gravel porosity was like 4 cm per second and the permeability 55%, that tell us that they are directly related, if one goes up the other goes up too.


We should care about it because depending on the porosity and permeability is how much water it will have, and that is all about LIFE.