In plants the reproductive structure that produces pollen and seeds is the xylem is the answer
The correct answer would be D, gravity. As moving water will cause rocks to erode as well as wind, and animal habitation.
It will take 15 years for Della to be in the same risk of
non-smoking persons in risk of cardiovascular disease. As you quit smoking, the
lungs will start to purify itself, but it will take some time. On the other
hand, it cannot be assured that the lungs may be totally restored, more or less
it would just be clean over a period of time.
