Answer:B
Explanation: The movement of metals in earths core and earths rotation are the two processes involved in the formation of Earths magnetic field. Hope this helps!
C.artificial reefs is the answer
12 841 years is the age in years of a bone in which the 14c/12c ratio is measured to be 2. 65×10−13
The skeleton of the body is made up of bone, which is living tissue. Bone tissue comes in three different varieties, including the following: dense tissue the denser, outer bone tissue.
Hard tissue is a subset of specialized connective tissue and is also known as osseous tissue or bone in the technical sense. Internally, the bone possesses a honeycomb-like matrix that contributes to the bone's stiffness. Long, short, flat, and irregular bones are the four main bone kinds.
Long bones are defined as bones that are longer than they are wide. They are made up of a long shaft and two large extremities. Although they may have a significant quantity of spongy bone at the ends or extremities, they are largely made of compact bone.
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