Answer:
This means that some cells are able to letter molecules pass through them and this makes it easier for the molecules to pass through.
From lowest to highest hierarchy it would be: planet, star, solar system, galaxy.
The initials will still be 4 feet above the ground.
Trees do not grow from the bottom up. At the branch tips there is meristem tissue, so called the apical meristem. Trees grow in height from these apical meristems, so trees grow from the top and the initials on the bottom of the tree will stay at the same height above the ground.
