apes

Approx how many more times acidic, in terms of H+ concentration, is precipitation in the northeastern US as compared to the precipitation in the South Pacific

10

The concentration of H+ ions in a solution

1000 times

A sanitary landfill with a surface area of 6000 receives a yearly rainfall amount of 300 mm

1440

approx 60% of municipal soil waste in the US is composed of some form of organic matter

8.4 kg

Some toxic compounds are ingested and retained in the tissues

Biomagnification

which of the following best explains why DDT has been found in penguin eggs in the Antarctic

Chemicals used in one region of Earth can circulate in the biosphere and affect organisms in a distant region.

which type of electricity generating power plants releases radioactive materials as well as toxic metals under normal operating conditions

D - Coal burning

The graph above shows the effects of sewage on biological oxygen demand (BOD) and dissolved oxygen (DO) in a flowing system. The smallest fish populations will most probably be found at point

DO decreasing slope

Alligators in a Florida lake polluted by high levels of dioxins had low testosterone levels and failed to reproduce. Scientists came to the conclusion that the dioxins were acting as which of the following

Endocrine disrupters

which of the following describes a potential human health effect most likely to be associated with a thermal inversion

Increase in respiratory irritation due to increase levels of fine airborne particulates

Although ozone in the stratosphere has been decreasing in recent years, ozone near Earth's surface is on the increase. The ozone near the surface is bad because it

Is a strong oxidant and respiratory irritant

of the following cities, which regularly experiences the worst levels of photochemical smog that is enhanced by thermal inversions

LA, California

most municipal solid waste in the US

Landfill

which of the following is the best example of environmental remediation?

PCB consuming bacteria is sprayed on an area that has soil contaminated with PCBs

Step P: water is passed through a screen Step Q: pathogenic organisms are killed by chlorification Step R:

PSRQ

many synthetic chemicals such as PCBs act as estrogen mimics. In an ecosystem these persistent chemicals would have the greatest effect on which of the following

Secondary consumers

The primary cause of acid rain is

Sulfur dioxide and nitrogen oxides produced when fuel is burned

catalytic converter's reduce which of the following pairs of pollutants in car exhaust

carbon dioxide and water vapor

Which of the following would most likely reduce the concentration of ground-level ozone in the air of a city

decrease in the emissions of nitrogen oxides

which of the following would encourage recycling?

decreasing taxes on recycled material

Factors that increase the spread of infectious diseases included all of the following EXCEPT

exposure to neurotoxins, which affect the endocrine system

Which of the following best describes a supporting ecological service provided by wetlands

provides a habitat for a wide variety of organisms

Why did the DO after one week decrease as the amount of waste increased

the carbon dioxide increased due to algal respiration

All the following are likely consequences of indoor air pollution except an increase in

the risk of skin cancer