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

[Q]: Passage: Most fungi get organic compounds from dead organisms. Fungi use their hyphae to penetrate deep into decaying organic matter. They produce enzymes at the tips of their hyphae. The enzymes digest the organic matter so the fungal cells can absorb it. Fungi are the main decomposers in forests. They are the only decomposers that can break down cellulose and wood. They have special enzymes for this purpose. Answer: hyphae
[A]: What do fungi use to penetrate deep into decaying matter?

[Q]: Passage: Figure 20.13 Diabetes is a disease characterized by high concentrations of glucose in the blood. Treating diabetes involves making lifestyle changes, monitoring blood-sugar levels, and sometimes insulin injections. (credit: "Blausen Medical Communications"/Wikimedia Commons). Answer: diabetes
[A]: What is a disease characterized by high concentrations of glucose in the blood?

[Q]: Passage: Green cyanobacteria on a lake make food by photosynthesis. Answer: photosynthesis
[A]:
Green cyanobacteria on a lake produce food through what process?