Answer :
The phrase “When it pours, the desert stores” refers that deserts have underground water reserves, so when it rains the desert stores water.
Is there water in the Sahara Desert?
Recently, a large amount of groundwater was identified in North Africa in the Sahara desert region, but at high depths that make it difficult for the poor population of the region to exploit it.
With this information, we can conclude that the phrase “When it pours, the desert stores” refers that deserts have underground water reserves, so when it rains the desert stores water.
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The phrase refers to the water-storage abilities of desert plant species.
Adaptation for water storage
Desert plants such as cactus are well-adapted to store water for long-term usage when water is available.
This ability makes desert species to be able to withstand drought. The reserved water is utilized when water availability reduces or ceases totally.
Thus, when it rains, the desert species store water.
More on desert species can be found here: https://brainly.com/question/5755073