Coral reefs are formed from coral polyps. When the polyps release calcium, a free swimming coral larvae is formed and which attack themselves to attached rocks.
The statement that best compares gymnosperms and angiosperms is : A. Both reproduce sexually, but gymnosperms contain only xylem and angiosperms contain xylem and phloem.
Gymnosperms produce exposed seeds, not enclosed in fruit whilst Angiosperms have Fruits, flowers, and endosperms as defining characteristics.
Answer:
200 percentage is the exact concentration
