Which of the following is an example of a closed system? A)
the Earth system
B)
the ocean
C)
an ecosystem
D)
a biome
E)
material or energy that is able to move in or out of a system

Compare and contrast the environmental consequences of reliance on coal with reliance on petroleum.

Among the following environmental factors, which does not have a long-term impact on the composition of a region's soil? a. kinds of crops grown b. types of fungi present c. topography of the landscape d. variety of species of mammals e. number of freezes occurring annually

Eva is a customer service representative. while attending to a customer, she avoids , thus exhibiting a positive employee trait. reset next