Which of the following species has the largest concentration in buffering systems of human blood?

A) H2CO3
B) HCO3-
C) H2PO4-
D) HPO42-


B

Environmental & Atmospheric Sciences

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A trickling filter system is generally used

A. to remove small objects. B. to remove phosphorus. C. to increase the amount of sewage sludge. D. to remove dissolved organic matter.

Environmental & Atmospheric Sciences

Why is it important to study deformed rocks?

What will be an ideal response?

Environmental & Atmospheric Sciences

The organisms that make their own food are called ____

A) primary consumers B) primary producers C) heterotrophs D) secondary consumers

Environmental & Atmospheric Sciences

The two opposing forces determining the vertical position of a parcel of air are

A) buoyant force and gravitational force. B) centrifugal force and coriolis force. C) coriolis force and buoyant force. D) gravitational force and pressure gradient force.

Environmental & Atmospheric Sciences