Earthworms have two muscles which is used in locomotion. Both muscles are circular and longitudinal (inner layer of the series of muscles). The diameter of the earthworms body is reduced when the circular muscles are contracted which makes them appear to be thin. The worm appears short when the longitudinal muscles contract thus, its length is reduced.
Amphioxus on the other hand, have two unique muscle fiber types. This includes deep fibers and smaller but mitochondria-rich superficial fibers. E<span>ach of which has its own innervation.</span>
The St. Lawrence Seaway connects the Great Lakes, the St. Lawrence River, and the Atlantic Ocean.
Answer:
animals who eat the bark can spread it.
Explanation:
logic
the answer is radiation
Radiation is the emission and propagation of energy. A substance does not need to be radioactive in order to emit radiation because radiation encompasses all forms of energy, not just those produced by radioactive decay. However, all radioactive materials do emit radiation.
