Complete the following nuclear equation: Po ? ? + He
A) Po
B) Pb
C) Pb
D) Rn
E) none of the above
B
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Use the list of three sustainability principles below to categorize actions taken by the city of Curitiba, Brazil, (or any city) in an effort to become more sustainable
a. reliance on solar energy c. chemical cycling b. Biodiversity 9. Flood-prone areas along the river banks have been converted to parks. 10. Volunteers have planted more than 1.5 million trees throughout the city. 11. Tax credits are available for installing solar panels on private homes. 12. 60% of metal, glass, and plastic is recycled. 13. Poor people who live in areas without garbage pick-up can exchange filled garbage bags for surplus food and school supplies. 14. City government buildings have solar panels to help heat the buildings. 15. 70% of the paper used in the city is recycled. 16. For every tree that is cut down in the city, two have to be planted to replace it.
You have an air mass at 10°C that contains 1.8 grams of water vapor per kilogram of air (g/kg) (content). Air at 10°C has a maximum specific humidity of ______________ grams (capacity). Using the equation given at the beginning of Section 1, what is the present relative humidity of this air mass? ______________
Show your work:
The most latent heat would be released in a ____ parcel of ____ saturated air
A) rising; warm B) rising; cold C) sinking; warm D) sinking; cold
Which of the following human activities commonly causes the over-steepening of slopes, which then leads to mass wasting?
A. constructing high-rise buildings B. construction of roads C. drilling of water wells D. logging of trees E. all of the answers listed here