Tell whether the statement is true or false. air pressure is gravity pulling down on air molecules.

How do you lengthen a pattern piece? (family and consumer science, sewing)

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?