Buffer zone and Transition zone

The stem-root transition zone is

What are the characterstics of the transition elements and why are they called transition elements ? Which of the d-block elements may not be regarded as the transition elements ?

Why the properties of third transition series are very similar to second transition series ?

What is the basic difference between the electronic configuration of transition and inner transition elements.

_____ is the transitional zone where plants and animals of both the ecosystems are available.

Give an example of an organism of benthic zone

The dominant producers in the neritic zone of the sea are :

What is Buffer solution ? Write Hendersen 's equation for calculation of the pH of a basic buffer.