The correct answer is radial symmetry.
This means that there's a central axis around which they are formed, which is similar to how starfish or tulips grow. Similarly put, it's like cutting a pie or a pizza through the axis and getting the same pieces.
Answer:
The first source is less credible
Explanation:
The first source is less credible because it is from wikipedia and it is an html. Most trusted sources are edu, .org, etc.
Skin is a layer that protects your bones
Scientist believe that the earth has a spinning core which creates a magnet for the earth