I think it is B because horses now have flat teeth, while horses back then had sharper teeth, I think. Tell me if I am wrong.
A watershed is land that contributes water<span> to a stream, river, lake, pond, wetland or other </span>body of water<span>. The boundary that separates one watershed from another, causing falling rain or melting snow or spring </span>water<span> to flow downhill in one direction or the other, is known as a “watershed divide”.
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I would say radiation and the pressure of impact on the body.
The organelle is called the mitochondria
