What is the mostly likely setting for this drainage pattern?
A) The rocks have a relatively equal resistance to erosion.
B) Drainages have followed a series of fractures that branch off of one another.
C) The area has folded or faulted rocks with different resistances to erosion.
D) A volcano once existed here but has been partly eroded away.
A) The rocks have a relatively equal resistance to erosion.
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Answer the following statement(s) true (T) or false (F)
1. A country with a 3% rate of growth for one hundred years would experience a 3% increase in population each century. 2. A drop in fertility means that fewer children are born each year. 3. Population momentum results in an almost immediate slowdown in population growth. 4. A sharp decline in population will mean a sharp decline in negative environmental impacts. 5. The world produces enough grain to feed each individual person a minimum diet of 2,000 calories per day. 2,923 calories are produced, but currently 37-40% goes to feed livestock.
Scientists can observe primary productivity in the ocean from space by measuring the ____
A) temperature of the surface water B) depth of the euphotic zone C) amount of chlorophyll in surface waters D) salinity of surface waters
Which surface water pollutant cannot be broken down or removed by natural processes?
A. arsenic B. oxygen-demanding C. bacteria D. oil
Primary productivity in nontropical terrestrial environments is typically limited by what nutrient?
A) K B) N C) Fe D) P