Question

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Answer 1

Some nature ones:
Water: Snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity.

Hydrogen: You can separate the hydrogen from the water, since it doesn't exist on Earth as a gas.

Ammonia: Naturally produced by bacteria, decaying plants and animals, and animal waste. It can also be found in water, soil, and air, and is a source of nitrogen for plants and animals.

Carbon Dioxide: Carbon dioxide can be found mainly in air, but also in water as a part of the carbon cycle.

Hydrogen Sulfide: Produced naturally from decaying organic matter. It can be released from sewage sludge, liquid manure, and sulfur hot springs.