I'm pretty sure it's primary growth. I might not have studied this type of biology yet, but secondary growth would definitely not be the answer.<span />
Your question is really vague, but when I typed it in, I found this website with people answering the same question: https://studyandanswers.com/biology/question20660094
Answer:
the characteristics of living beings are all of the four
I’m not sure but I think the answer is B or D
Air pollution; smoking in the house
