$(a)$ State any two factors that could lead to the rise of a new species.
$(b)$ How do analogous organs provide evidence in favour of evolution?

(N/A) Two factors that lead to the rise of a new species (speciation) are:
$1$. Genetic drift: Changes in allele frequencies due to chance events in small populations.
$2$. Natural selection: The process where organisms better adapted to their environment tend to survive and produce more offspring.
$(b)$ Analogous organs are those that perform similar functions but have different structural origins and developmental patterns. For example,the wings of a butterfly and the wings of a bird both serve the purpose of flight,but their internal structures are completely different. This provides evidence for evolution by showing that different species can evolve similar adaptations independently to survive in similar environments,a process known as convergent evolution.