a group of species inhabiting a given area and interacting directly or indirectly

Given the gas-phase reaction  2SO2(g) + O2(g) ⇄ 2SO3(g).  Suppose that the reaction has already taken place, and the system has come to equilibrium. If the following changes are made to the system in equilibrium, tell what effect these changes will have on the system (whether the equilibrium is shifted to the left, is shifted to the right, or is not shifted). 

Which of the following are examples of stress applied to change the equilibrium shift of a system?

phenolphthalein is color [BLANK-1] in basic solutions.

Gloved hands following proper closed gloving techniques are:

Measurements of waist circumference determine the quantity of __________________. 

An appropriate reward for meeting a dietary goal is ____________.

Which of the following is the most commonly used drug for maintenance anesthesia in amphibians and fish?  VTNE

The Harris-Benedict equation is designed for individuals who are _________________.

Essential fat, either subcutaneous or visceral fat, is also called ______________.