A similarity would be that they are both muscles. A difference would be cardiac muscle is only in the heart while skeletal muscle can be found throughout the body. Another similarity would be that they are both striated. Another difference would be that skeletal muscle is generally on conscious or voluntary control while the cardiac muscle is automatically used to keep your heart pumping
None because they are children play toys not scientific tools!
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It transports items in and out of the cell
A biologist whose interest lies primarily in the study of plants or animals can be called a naturalist, although these days it's more likely she'll be called a natural historian, a botanist, or a zoologist.
