5. Why is it helpful to increase soil carbon and build soil organic matter?

Increasing the amount of carbon stored in the soil, you offset the amount of CO2 in the atmosphere and also improve the health of soil. Increasing organic matter in soil increases the amount of carbon in soil, and wide range of soil health benefits result.

Explanation:

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

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