Briefly state how Matilda invited ‘a dreadful life of necessity’ into her family.

Name the two major events of this history of life ? Briefly state the major theories of origin of life ? Which one of them has scientific basis ?

Explain briefly how +2 state become more and stable in the first half of the first row transition elements with increasing atomic number?

Briefly explain, how does a metallic rod heated at one end attain steady state ? Write the important features of steady state.