The evolution of roots allowed plants independence from moist environments and to spread over all land types
a. True
b. False
False
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Developing countries have a higher share of primary and secondary sector workers and a smaller share of tertiary sector workers than developed countries
Indicate whether the statement is true or false.
Photosynthetic autotrophs changed the composition of the atmosphere during the oxygen revolution
Indicate whether the statement is true or false
Cities in developing countries containing a complex mix of ethnic groups show evidence of which urban structure model?
A) multiple nuclei B) concentric zones C) Griffin-Ford model D) informal settings E) sectors
The doubling time is an important aspect of the population growth rate of a city, country, or region. It is also referred to as the rule of __________
Fill in the blank(s) with correct word