In the soil, oxygen concentrations are highly variable even within a soil particle. The center of the particle may be anoxic even if the outer portions are oxygen rich. In this context, facultative anaerobes could be found

a. in the center of the particle.
b. at the surface of the particle.
c. in the middle regions of the particle.
d. throughout the particle.

answer diabetes mellitus;

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).

b . streams flow into shallow areas.

f . movement of earth’s crust creates low areas that fill with water.

the answer is false.. have a great day; )