Push-ups can reduce symptoms of arthritis.
They can never reduce bone density, they can only reduce your weight. They cannot increase amount of cholesterol, food does that. Although they can increase back pain, the more pushups you do, the less pain you will feel. So D is the correct answer for sure.
The nucleus basically controls every activity in the cell so, the nucleus is transferring proteins, nutrients, waters and salts to provide for the cytoplasm which takes up space in the outside of the nucleus.
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