Answer:
it appears to move in the opposite direction
Explanation:
The roundworm body cavity is pseudocoelomic, whereas the planarian body cavity is acoelomic.
The answer is : intertidal zone
Answer:
These include temporal isolation, ecological isolation, behavioral isolation, and mechanical isolation. Post-zygotic barriers: barriers that come into play after two species have mated. These include genetic incompatibility, zygotic mortality, hybrid inviability, hybrid sterility, and hybrid breakdown.
Explanation: