Answer: because they cannot be produced in the body and must be consumed from outside sources
Gneiss typically has a banded, foliated or platy texture.
The particles vibrate but they are tight together so they don’t move past each other
Answer: Secondary growth is the outward growth of the plant, making it thicker and wider. Secondary growth is important to woody plants because they grow much taller than other plants and need more support in their stems and roots. Lateral trimester are the dividing cells in secondary growth, and produce secondary tissues.
Explanation:
