The soil shown in the photograph below has a reddish tint, which may mean that
A. it has been waterlogged at some point.
B. it has abundant aluminum and/or iron oxides.
C. there are salts or other minerals that have been deposited by the evaporation of water.
D. it contains abundant organic matter.
Answer: B
You might also like to view...
________ is a biochemical sedimentary rock that often forms in carbonate reefs
A) Limestone B) Chert C) Rock Salt D) Bituminous Coal
Explain the relationship between phenomenological rupture, trust, and the creation of ecological knowledge by discussing the Practical Farmers of Iowa example from the book.
What will be an ideal response?
The city of Greenville has decided to build a new power plant. A government grant will help pay the building costs based upon the amount of CO2 that the new plant produces: the less CO2 emissions, the greater the value of the grant. The rest of the building cost will have to be paid by local taxpayers. Based upon this factor alone, which type of power plant would be the best option for the city?
A. Nuclear power B. Natural gas C. Coal
Which of the following biologically important compounds is achiral?
A) 3-aminopropanoic acid B) 2,3-dihydroxypropanoic acid C) 3,5-dihydroxy-3-methylpentanoic acid D) None, they are all chiral.