A connecting link is anything that connects or joins one thing to another
or it is also reffered to a chain link having a movable section
The Brainliest Answer!

Organisms referred to as "connecting links' are those which are structurally intermediate between two different groups.

Connecting links can be found among organisms that are still living.

Examples:- 1. 'Peripatus' has segmental nephridia, thin cuticle and parapodia - like appendages as in Annelida. At the same time, it has trachea and open circulation as in Arthropoda.

                   2. The duck-billed platypus lays eggs like reptile and has hair and mammary glands like mammals.

                   3. Lung fish though a fish breathes air through it's lungs.

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