Active transport. it's the only method of transfer of material that is again concentration gradient
Answer:
a. on the outer surface of the epiphyses.
Explanation:
Articular cartilage of a long bone is found on the outer surface of the epiphyses.
Migratoin is not always temporary so the anser is false
The answer is spicules. These
sharp-pointed structures are formed from calcium carbonate skeleton of
the organisms. They can also be formed from silica. They can be big (megascleres),
or microscopic (microscleres). Also dependent on the number of axis on the spicules, they are classified as monoaxon,
triaxon or polyaxon.
