The more similar the sizes of each cohort on a population's age-sex pyramid, the closer that population's rate of natural increase is to zero
Indicate whether this statement is true or false.
TRUE
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Which of the following would be considered a heterogeneous mixture?
A. vinegar B. water C. milk D. vegetable oil E. salad dressing
The polar easterlies occur in which of the following regions?
A) Equatorial (0 to 5 degrees) B) 5 to 30 degrees C) 30 degrees D) 30 to 60 degrees E) 60 degrees F) 60 to 90 degrees G) Poles (90 degrees) Indicate whether the statement is true or false
Construction of a dam results in
A) an increase in the total amount of water flowing downstream of the dam.
B) increased erosion by clear water released from the dam.
C) the dam releasing water that contains more sediment than carried by the river before the dam was constructed.
D) increased erosion where the stream channel meets the reservoir.
What was not an invention rendered by the Chinese to facilitate their ocean voyages?
a. Central rudder system b. Watertight compartments c. Chronometer d. Compass