Answer: a cell wall
Explanation: a cell wall is a barrier that protects the plant cell. Animal cells do not need this becuase they have a cell membrane which also protects the cell.
Answer: The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones.
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I just want to say that my account got deleted yesterday and i would love if i got at least 15-20 friends by Christmas.
Answer:
The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.
Explanation:
In 2003 congress passed the Medicare Prescription Drug Improvement and Modernization Act. title I. Medicare Prescription Drug Benefit, Section 101. It amends title XVIII, which is the Medicare Act of Social Security to add a new Part D, the voluntary prescription drug benefit plan. It is a voluntary prescription drug program. <span />