It’s either A or E most scientist try to come up with a logical explanation when it comes to nature and why it happens in nature I’m going to say it’s E because they can’t just have a final answer there more and likely going to come up with a rational person explanation
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You can use a penny to test tread wear.
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Brady
The mesentery, Coffey argues, should be considered an organ because it holds up our intestines (a discrete role) and has a distinct structure. “It has a beginning and an end, and in between it kind of fans out like a Chinese fan,” he says, and is usually about two feet long