The best way to simulate rain water for your plants is to use distilled water. It will provide a pure form of water which is free of chemicals found in tap water.
Its natural.
If you mean in flower pots, it's to simulate the drainage that the plants would have if they were in the earth itself.
The rainwater contains minerals from the clouds, walls of rainwater tanks etc, thy just do. But water from a tap (unless bore water) Has no minerals in them and is clean and has no minerals.
It is just as good as any filtered water.
well the animals can get water from rainwater, pond, lakes etc etc#
The rain water is very useful for growth of plants because it is mostly unpolluted and also leaching of salts takes place in the vecinity of plants.
Carbon dioxide (CO2) is the most common form of carbon that dissolves in rainwater. When CO2 from the atmosphere combines with rainwater, it forms carbonic acid (H2CO3), which is responsible for the mildly acidic nature of rain. This dissolved carbon in rainwater can then be utilized by plants for photosynthesis or can react with minerals in soil and water bodies.
Toucans get their water from the plants they eat. It is also obtained through rainwater gathered in the leaves and plants, and occasionally from puddles on the ground.
Rain barrels are used to collect rainwater from surfaces such as rooftops. After the rainwater has been collected, one may utilize the contents of the rain barrel to water plants, etc.
Different plants have different nutrients , so no
Hydroponic lights are used to in the practice of growing plants indoors. They are used in hydroponics to simulate the sun so that the plants can grow as if they were planted outdoors.
Between metal and plastic for collecting rainwater, plastic is better. The plastic is less harsh for the soil as well as the plants compared to the plastic barrels.