Answer: Analogous
Explanation:
The bodies of sharks and dolphins are analogous structure. They have common functions but they are originated separately.
The analogous structures are those structures that originate differently and their functions remains the same or the the differently originated structures functions in a similar way.
Example : body of dolphins and sharks.
I would say that it's B. But that is not for sure.
Activation energy is needed by a system to initiate a process.
The first one is a.
2 is where water vapor is
