List three factors which promote the growth of microorganisms​

I will give you 6.

Explanation:

1. Solutes and Water Acidity

2. Temperature

3. pH

4. Oxygen Requirements

5. Pressure

6. Radiation

Hope this helps.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.