Which best compares and contrasts red blood cells and white blood cells? Both are produced in the red bone marrow. Red blood cells transport oxygen, and white blood cells protect the body against disease.
Both are produced in the red bone marrow. Red blood cells carry all blood components, and white blood cells help the body heal cuts.
Both are made of hemoglobin. Red blood cells transport oxygen, and white blood cells protect the body against disease.
Both are made of hemoglobin. Red blood cells carry all blood components, and white blood cells help the body heal cuts.

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the answer is

d)Both are made of hemoglobin. Red blood cells carry all blood components, and white blood cells help the body heal cuts

Explanation:

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stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.