Carbon dioxide concentrations in soil are ________ than in the atmosphere because ________
A) lower; transpiration
B) lower; plant photosynthesis
C) higher; ongoing respiration in the ground
D) higher; decay of dead plants and animals
C
You might also like to view...
The beauty of equidistant maps is that they
A) are aesthetically pleasing. B) objectively represent the world. C) accurately represent distance in all directions. D) display areas on the earth's surface in their true proportions.
China's experiment with SEZs, open coastal cities, and open economic regions has largely been unsuccessful
Indicate whether the statement is true or false
The four most frequently spoken branches of Indo-European include all but
A) Balto-Slavic. B) Celtic. C) Indo-Iranian. D) Romance. E) Germanic.
The area at the surface directly above the subsurface location where seismic waves are initiated is termed the
A) epicenter. B) fault area. C) Richter zone. D) focus, or hypocenter.