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

[EX Q]: Passage: Dissolved substances have a higher entropy value than their corresponding precipitate. Answer: entropy
[EX A]: What value of dissolved substances is higher than that of their corresponding precipitate?

[EX Q]: Passage: Carbon moves through ecosystems in two cycles that overlap. In the biotic cycle, it moves between living things and the air. In the abiotic cycle, it moves between the air, ground, and oceans. By burning fossil fuels, humans have increased the amount of carbon dioxide in the air. Answer: biotic cycle
[EX A]: In what part of the carbon cycle does carbon move between living things and the air?

[EX Q]: Passage: Pillow lava is created from lava that enters the water. The volcanic vent may be underwater. The lava may flow over land and enter the water ( Figure below ). Once in the water, the lava cools very quickly. The lava forms round rocks that resemble pillows. Pillow lava is particularly common along mid-ocean ridges. Answer: pillow lava
[EX A]:
Lava that enters the water is called what?