Once you make the hypothesis, you need to check if it's true. So your answer would be C!
Have a nice day! :)
Carbon dioxide and sunlight I think
Because secondary sucession has bas soil that is intact still unlike primary sucession which begins with virtually lifless area without soil
<span>The production of vowel/consonant combinations at 4 to 6 months is called babbling. </span><span>The period from the 4-th to the 6-th month is called the expansion stage. In this stage the infant is "playing" with the speech mechanism, includes productions of growls, squeals, yells, and raspberries. Some CV like combinations and vowel sounds may be produced.</span>