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True or False: Every phoneme must have exactly one allophone.

The [BLANK-1] plane divides the body into right and left halves.

Using the following hypothesis statement, identify the dependent variable. Children who eat dinner with their families at least five times a week are less likely to engage in risky behaviors.

State whether each of the following indicates negative or positive feedback:  Part of the complex biochemical pathway of blood clotting is the production of an enzyme that forms the matrix of the blood clot. This has a self-catalytic, or self-accelerating effect, so that once the clotting process begins, it runs faster and faster until, ideally, bleeding stops. [BLANK-1]

What is the place of articulation for the sound /t/?

This plane divides the body into anterior and posterior parts. [BLANK-1] 

All of the chemical reactions within a cell are known as cell _________.

This plane divides the body into superior and inferior halves [BLANK-1].

What is the function of the basement membrane?

The [BLANK-1] cavity contains the heart and lungs.