While many organisms depend on the soil for nutrients and water, only a few very specialized organisms live in the soil itself.

a. trueb. false

Option:False.

There are billions of microorganisms including bacterial life, archea, insects and many other living beings which resides inside the various layers of the soil.

Explanation:

There more then billions of a microorganisms which lives inside the various layers of the soil and mainly performs the function of decomposition inside the environment, which leads to break down of macro-molecules inside the environment and enough energy is released by the breakage of bonds present on molecular level. As the optimum amount of energy is required to drive all the cellular processes and more over for the sake of conservation of energy inside the biosphere.

The fertility of the soil is greatly effected by the right amount of microorganisms present in it. As the microorganisms along with other insects and bacterial life greatly effects the fertility of any soil sample.

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15