The period is the time it takes the satellite to make a complete orbit around the central object. As the distance increases, so does the period because the orbit becomes longer because the radius increases.
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The statement which explains why muscle cells and skin cells do not look and act the same is this: THE GENES IN EACH TYPE OF CELL ARE BEEN EXPRESSED DIFFERENTLY.
All the cells in human's body has the same set of genes, this is because, all the cells in the body originated from a single fertilized egg. Even though all the cells in the body has the same origin, they are different from one another because, the cells use the same set of genes differently.
A locating overlapping sequences
Answer: D
Explanation: Wind turbines generate energy by moving. (Kinetic energy is movement.) Wind turbines, in more detail, are pushed by the wind which causes a transfer of kinetic energy which is then converted by the turbine into electrical energy.