B. It insulates the fish from the cold air above
Just like an igloo
Answer:
As with sea horses, sea dragon males are responsible for childbearing. But instead of a pouch, like sea horses have, male sea dragons have a spongy brood patch on the underside of the tail where females deposit their bright-pink eggs during mating.
Answer:
-The skeletal muscle has long and cylindrical cells. The cardiac muscle cells are short and together they form a branch.
-The heart muscle fibers have only one nucleus in the center. The skeletal muscle fibers are multinucleated.
-The skeletal muscle is voluntary and the cardiac is involuntary.
- Sarcoplasma and glycogen are more abundant in the heart muscle.
-The cardiac muscle is longitudinal striated and the skeletal is transverse striated
C. When one population cannot interbreed with the other population.
