Given a scientific passage and an answer, generate a question for the given answer.

[Q]: Passage: In sexually reproducing organisms, parents pass a copy of each type of chromosome to their offspring by producing gametes. When gametes are fertilized and form offspring, each has a unique combination of chromosomes and genes from both parents. The inherited gene combination determines the characteristics of the offspring. Answer: chromosome
[A]: In sexually reproducing organisms, parents pass a copy of each type of what to their offspring by producing gametes?

[Q]: Passage: Benzoic acid crystals in polarized light are pictured above. Benzoic acid is widely used as a food preservative, either as the carboxylic acid or as the sodium benzoate salt. This compound is most effective when added to acidic foods such as fruit juices and soft drinks. The major industrial source of benzoic acid is the partial oxidation of toluene with oxygen. The process is inexpensive and environmentally benign. Answer: benzoic acid
[A]: What type of acid is often used as a preservative for acidic foods such as fruit juices?

[Q]: Passage: Ocean currents transfer heat from the Equator toward the poles. This moderates Earth's temperature. Answer: poles
[A]:
Ocean currents transfer heat from the equator towards what locations?