Ecology was coined by Haeckel, and it studies the relationships between organisms and their environments. Ecosystem was coined by Tansley, and the concept of 'Climatic Climax' refers to ecological succession.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: