Answer:
Providing a controlled source of water vapour through which water can be vaporized into the plant envoirment.
Explanation:
Humidity ratio is the ratio of the mass of water in air to the mass of dry air. Humidity is needed in some conditions where the air is very dry. In a very dry air setting, there can be excess moisture loss from the plant surface, increasing the Humidity ratio can counter this effects and reduce excess moisture loss.
Answer:
where are the choices????
are found along the zigzag line on the periodic table. The only exception is Aluminum. It is considered to be a metal even though it lies along the zigzag.
Definitely 4 Play control environment temperature
Length of time candle burns is the correct answer.
