Answer:
Healthy fingernails are smooth, without pits or grooves. They're uniform in color and consistency and free of spots or discoloration. Sometimes fingernails develop harmless vertical ridges that run from the cuticle to the tip of the nail. Vertical ridges tend to become more prominent with age.
detoxification is the answer.
Answer:
True.
Explanation:
Blood flows to both sides of the heart at the same time, with heart valves on both sides opening and closing at the same time
