Option C would be correct. The organ system can plays many parts at one time. Also, it is the only system listed.
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The correct answer is that variable number repeats are used in DNA tests; they have hundreds of possible lengths. Eye color is determined by variations in a person's genes. Most of the genes associated with eye color are involved in the production, transport, or storage of a pigment called, melanin. Eye color is directly related to the amount and quality of melanin in the front layers of the iris.
Fossils can give information about past environmental conditions by showing the type of animal they belonged to. If a scientist found a whale fossil in a desert, he/she could assume that the desert was once an ocean as whales only live in oceans. If someone found a fossil of a lizard that inhabited trees, in the middle of the ocean, then he/she could assume that the ocean didn't exist at one point and instead, there might have been a forest in it's place.
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Rheumatoid arthritis: A chronic progressive disease causing inflammation in the joints and resulting in painful deformity and immobility in the fingers, wrists, feet, and ankles.Systemic lupus erythematosus: The i<span>mmune system mistakenly attacks healthy tissue.</span>
I can't see an options so it's complicated to answer this question. But I think I've forund what you mean via Internet. So in my opinion the right one is <span> "Get into a bikini by this summer with our muscle toner machine." </span>
