After the first few months of life, babies enter what is known as the stage, during which time they tend to produce single syllables, such as buh-buh, that are repeated over and over.

Babbling stage.

Explanation:

BRAINIEST PLEASE and that is a real stage.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.