Every animal is composed of a collection of organs, allowing the animal to live. Animals have internal to external skeletons that allow which of the following functions for the animal? Group of answer choices

Exchange gases

Protect from disease

Take in nutrients

Allow movement

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 many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

Which factor is likely to impact the possible number of compounds ?