<span>Aquatic biomes are characterized by water</span>
Because the have hollow bones, feathers, wings, beaks, and they lay eggs
Answer:
Number 1 is warm and moist
Explanation:
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.
