Answer:
With a cold comes inflammation of the structures around the vocal cords. With the inflammation comes swelling of those structures. Thicker vocal cords vibrate more slowly and give a lower pitch.
Explanation:
Whereas primary tissues allow for vertical growth, secondary tissues allow for lateral growth: they allow stems and roots to become wider. In roots, the formation of both secondary meristems involves the pericycle.
C. the crust and upper mantle
<span>Vitalism is a belief that there is difference between living and noliving things. Living things are governed by different principles which are not applicable for nonliving things. The scientist now reject the vitalism since it lack scientific proof. It is considered only as spiritual. modern scientist believe life originated from non living things in the course of time.</span>
