Answer:
Rain washing away soil from a hillside and Flood water pouding against a canyon wall and wearing it down
Answer:
A double-layered membrane called the pericardium surrounds your heart like a sac. The outer layer of the pericardium surrounds the roots of your heart's major blood vessels and is attached by ligaments to your spinal column, diaphragm, and other parts of your body.
Explanation:
Answer: thymine, guanine, guanine, and cytosine
Explanation:
A pairs with T
G pairs with C
