A population growth rate of 1% means a population will double in 70 years (70/growth rate). China's growth rate is 0.65%, which means
A. its population of 1.3 billion will reach 2.6 billion by 2080.
B. at the current rate, its population would double in 108 years.
C. the population has already begun to decrease from its peak 1.31 billion.
D. China needs to reconsider its one-child policy
B. at the current rate, its population would double in 108 years.
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Mutations can occur in any cell type, however only those that occur in ____________________ are passed on to offspring, thus allowing for evolution
Fill in the blanks with correct word
Oceanic plates are ____.?
a. ?poor in basalt, but rich in silicates b. ?an even mix of basalts and silicates c. ?rich in basalt and silicates d. ?rich in basalt, but poor in silicates e. ?poor in basalts and silicates
Off-road vehicle use contributes to soil problems by
A) loosening soil and changing the hydrology of a site B) polluting soil with vehicle emissions C) changing the local rainfall characteristics D) changing the classification of a soil
Island arcs are associated with
A. ocean-ocean convergences. B. ocean-continent convergences. C. hot spots. D. continent-continent collisions.