The Sink of an Element in the Ecosystem

question 67

Multiple Choice

The sink of an element in the ecosystem

• A) is the reservoir to which it returns during cycling.
• B) is the most accessible reservoir of that element.
• C) renders the element inaccessible.
• D) releases the element into the subsurface.
• E) is the source of the element for living organisms.

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Definitions:

Difference

The result of subtracting one number from another, or the operation of subtraction itself.

Polynomials

Algebraic expressions that consist of variables and coefficients, combined using only addition, subtraction, multiplication, and non-negative integer exponents.

X

A commonly used variable or symbol to represent an unknown value in mathematics and algebra.

Cubic Polynomial

A polynomial of degree three, expressed in the form ax^3 + bx^2 + cx + d.