Author Question: As of 2014, the proportion of urban population is A) highest in Africa and Asia. B) fairly ... (Read 47 times)

JMatthes · **on:** Jul 16, 2018

As of 2014, the proportion of urban population is

A) highest in Africa and Asia.
B) fairly stable in North America, Oceania and Europe.
C) increasing at the same rates in nearly all regions.
D) balanced by the rate of people emigrating to rural areas.

Question 2

Which of the following best describes mycorrhizae?

A) Pathogenic soil bacteria and fungi that destroy plant roots
B) Common in soils that lack a functional humus
C) Symbiotic fungi that increase soil nutrient uptake in plant roots
D) Important soil millipedes that increase aeration of topsoil