precipitation that incorporates anthropogenic acids and acidic materials; ph below 5, H2SO4; HNO3
Active Solar Heating
generally pump at a heat absorbing fluid medium through a small collector, such as air or water
substances that are slightly harmful to your health when ingested or inhaled
modifying slightly to fit a new set of conditions
the largest river; runs through South America
Minute particles or liquid droplets suspended in the air
living or occurring only in the presence of oxygen
large volume of air defined by its temperature and water vapor content
damaging materials released into the environment
bloom of algae; caused by excess nutrients (nitrates and phosphates)
level of alkaline in a substance; pH 7.1-14
biochemical interactions among all types of plants including microorganisms
a description of a surface's reflective properties
the air immediately around us
pungent colorless gas
ammonium compounds in the decomposition of organic matter
fresh water fish that swim to ocean, and return to fresh water
lives or occurs without oxygen
human-caused or resulting from the influence of human beings
water-bearing layers of sand, gravel, and rock below Earth's surface
4th largest lake in the world, no outlet, the evaporation keeps the water from rising
Army Corps of Engineers
provide vital public security, energize the economy, reduce risk for disasters
highly toxic metalloid widely spread through nature; in the soils in the West
fibris mineral that does not burn, utilized for fire protection
the remains of burned objects
nitrogen compounds are incorporated into proteins & DNA
Aswan High Dam
It was built in 1956 to control the flooding of the Nile River. The dam gives Egyptian farmers a more dependable source of water for their crops. It also gives Egypt electrical power.
a gasous layer that envelopes the Earth; N2 78%, O2 20.94%, Argon .9%, CO2 0.38%
warm layer traps a cool layer beneath it
variety of gasses caused by internal combustion engines (VOC, Nitrous Oxides, CO2, CO)
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.