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

[Q]: Passage: The global pattern of precipitation is influenced by movements of air masses. For example, there is a global belt of dry air masses and low precipitation at about 30 N and 30 S latitude. Answer: air masses
[A]: The global pattern of precipitation is influenced by movements of what?

[Q]: Passage: 19.4 Community Ecology Communities include all the different species living in a given area. The variety of these species is referred to as biodiversity. Many organisms have developed defenses against predation and herbivory, including mechanical defenses, warning coloration, and mimicry. Two species cannot exist indefinitely in the same habitat competing directly for the same resources. Species may form symbiotic relationships such as commensalism, mutualism, or parasitism. Community. Answer: symbiotic
[A]: Commensalism, mutualism, and parasitism are known as what type of relationships?

[Q]: Passage: When acid and base solutions react, they produce water and a neutral ionic compound called a salt. The reaction is called a neutralization reaction. Answer: salt
[A]:
When an acid and base solutions react, they produce water and a neutral ionic compound known as what?