Atmospheric Science

Calculate the total concentration of air molecules (molecules/cm3) at 20 km, 40 km, and 70 km and 100 km. See attached file for full problem description.

Water risk assessment

I am looking at a problem in a textbook that asks me to explain if I would allow water activities in a city river. The data collected by the City are those of fecal coliforms, total coliforms and heterotrophic plate counts. These types of bacteriological analysis are used to determine the presence of sewage pollution, water quality and heterotrophic bacteria capable of causing disease. The bacterial results given fall above guidelines only during a few months of the year. These are the months to which these recreational activities would be primarily held. The city would like my recommendation in formulating a by-law allowing the public to use the river for recreational purposes: including ... click for more

Effluent in man made lake???

A Wastewater Treatment Plant has a very decent treatment system and produces an effluent that has low bacterial numbers usually ranging from 10-100 fecal coliforms/mL. There has been a request to allow the treated effluent to be used to fill a nearby pond as the pond leaks a lot and would require consistent filling. With the treatment plant close by it would be simple to pump the treated effluent into the pond on that continual basis. There has been promise that no swimming will be allowed and signs will be posted. Should I have concerns with this idea and whether or not the park should be allowed to do this. I am trying to think outside the box!!! Of course I don't agree with th... click for more

Environmental Science

How would you create a city that does not produce more air pollution than the atmosphere can cleanse naturally? In creating this more sustainable environment, consider livability, safety, and convenience.

Environmental Science

1. You are eating a fruit salad that contains the following ingredients: bib lettuce, bananas, apples, coconut, kiwi, mango, avocado, figs, and almonds. Make a list or each item in your salad and their countries of origin. Include why each fruit grows well in that particular area. Then, search the Internet to determine what crops are grown in your area. (Oranges is what I used in this question because I am in Florida) How many items in your salad were locally grown? How dependent on international trade and trade between states are we? Discuss the impact of the movement of food around the world. 2. Imagine that you have been sent as a Peace Corps volunteer to a poor African nation exper... click for more