In 19th century, geologists developed the geologic time scale using
a. fossils.
b. radiometric dating techniques.
c. absolute ages.
d. the principle of uniformitarianism.
D
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What is the relationship between average stream velocity, stream roughness and stream gradient?
A. As average stream velocity increases, roughness and gradient decrease. B. As average stream velocity increases, roughness and gradient increase. C. As average stream velocity increases, roughness decreases and gradient increases. D. As average stream velocity increases, roughness increases and gradient decreases.
At $13,700, Namibia has the highest GNI PPP per capita in Southern Africa
Indicate whether the statement is true or false
If the total world population reaches 13 billion, what is one issue that consumers will need to address to maintain the population on Earth while considering carrying capacity of the Earth itself?
A) Since biocapacity will be less than carrying capacity, consumption in developing countries can increase. B) Behavior, attitudes and lifestyles will need to follow a path of increasing consumption of resources. C) Resources will need to be limited in only developing countries. D) Behavior, lifestyles, and expectations will need to follow a path of minimizing consumption of resources. E) Resource demand will need to be limited in only developed countries.
Recycling is less economically feasible in urban areas because of the high concentrations of recyclable materials.
Answer the following statement true (T) or false (F)