A septic system is ________

A) a rural method of handling sewage
B) the use of natural wetlands to cleanse wastewater
C) a toxic or badly polluted waterway
D) an early version of a wastewater treatment plant
E) a second level mechanism to remove bacteria at a wastewater treatment plant


A

Environmental & Atmospheric Sciences

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Isotopes are the forms of an element that differ from one another by having different ____.

A. atomic numbers B. numbers of electrons C. numbers of protons D. mass numbers E. electrical charges

Environmental & Atmospheric Sciences

Of the many factors that affect the basil metabolic rate, the MOST important factor is:

A) the person's age. B) the person's sex. C) the person's level of activity. D) the person's body surface area.

Environmental & Atmospheric Sciences

Earth's core is likely to be ____

A)composed of rock with high silica content B)hollow C)molten throughout D)composed of potassium and aluminum rich silicates E)composed primarily of iron

Environmental & Atmospheric Sciences

A hypothesis that explains how new organisms or new characteristics can appear suddenly in the fossil record is called

A. evolution. B. punctuated equilibrium. C. natural selection.

Environmental & Atmospheric Sciences