Bacteria living in the soil are dependent upon which of the following abiotic factors?
a.
plant root structures and oxygen content
b.
soil temperature and water content
c.
nitrogen content and insect activity
d.
insect activity and plant root structures

Soil temperature and water content.

Explanation:

Bacterial cell that is found in the soil is which needs several factor to grow in it. The bacterial cell grows in a temperature which is favorable for its growth.

Water content of the soil is also an very important factor which is required for the growth of the bacterial cell inside the soil.

The water content and soil temperature determines the growth of the bacterial cell. This determines the overall texture and quality of the soil.

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

there is none because earth is stationary and flat.