Author Question: Under aerobic conditions, the carbon in decaying vegetation in a lake ends up primarily as A) ... (Read 60 times)

panfilo · **on:** Aug 27, 2018

Under aerobic conditions, the carbon in decaying vegetation in a lake ends up primarily as

A) methane, CH4.
B) cyanide, CN-.
C) carbon monoxide, CO.
D) carbon dioxide, CO2.

Question 2

An early source of phosphorus for agriculture was

A) urea.
B) bird droppings.
C) superphosphate.
D) all of the above