Which naturalist worked in the Malay Archipelago?

Which naturalist proposed that the evolution of life forms occurred through the use and disuse of organs?

Branching descent is one of the key concepts of

Darwin's theory of Pangenesis shows similarity with the theory of inheritance of acquired characters. Which of the following is true regarding this?

Who was a co-worker of Darwin?

What is the correct chronological order of the geological eras?