When we speak of protecting the environment, we are referring to
a. all living things on the planet
b. all non-living things such as air, fresh water, and energy
c. all living and non-living things
d. humans and the living and non-living things that affect them only
e. humans and the living things that affect them only
C
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Neoclassical, ecological, and environmental economists believe there has to be a balance between economic growth and environmental preservation.
Answer the following statement true (T) or false (F)
Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at 25°C?
A. The attractions among the submicroscopic particles of the solid are much stronger-so much stronger that they hold the particles of the solid absolutely still. B. The temperatures of these two materials are the same, which means that the attractions among their submicroscopic particles are also of the same strength. C. The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas. D. The submicroscopic particles of the gas are moving faster. This means that they have more energy, which means that the attractions among them must be stronger.
The short half-life of Uranium 238 allows it to be used for dating events within the past 20,000
years. Indicate whether the statement is true or false.
Since the 1986 ban on leaded gasoline in the United States,
A. there have been no appreciable improvements as a result of this legislation. B. children's blood lead levels have continued to rise, calling into question the effectiveness of the legislation. C. children's average blood lead levels have dropped and average IQ's have risen.