One main theme is the change over time. For example, in many fictions, species change their physical or mental characteristics as time passes. Another theme is adaptation. Creatures adapt to new environments which is a key part of evolution theory.
Survival is also a common theme. In evolution - related book fictions, species have to fight for survival. Those that can adapt better are more likely to survive and pass on their genes. For instance, in stories about post - apocalyptic worlds, humans may evolve new skills or traits to survive in the harsh conditions.
Magic is a main theme. Brujas use their magic in different ways in these fictions.
Immortality is a major theme. For example, in 'Tuck Everlasting', the Tuck family's immortality due to the fountain of youth - like spring makes them different from normal humans. It shows how immortality can be both a gift and a curse.
One common theme is power. Necromancy often gives the characters a great deal of power, which can be used for good or evil. Another theme is the afterlife. Since necromancy deals with the dead, there are often questions and exploration about what happens after death.
One common theme is stigma. Many HIV book fictions show how people with HIV are stigmatized by society, whether it's in the workplace, in relationships or in their families. For example, in some stories, characters with HIV are shunned or discriminated against.
Identity is a very common theme. Transgender characters in these fictions are often on a journey to discover who they really are, like in 'Middlesex'. Another theme is acceptance, both self - acceptance and acceptance from society and family. In 'Redefining Realness', Janet Mock struggles to be accepted for who she is. And then there's the theme of love. In 'The Argonauts', Maggie Nelson explores how love can exist and be redefined in the context of transgender identity.
One common theme is survival. Characters in these fictions are often fighting to stay alive in the face of a deadly plague. Another is the breakdown of society. Plagues can disrupt social order, and this is often explored. For example, in 'The Stand' by Stephen King, the plague causes chaos and the formation of new, often extreme social groups. Also, themes of hope and despair are common. Some characters may find hope in the darkest of times, while others are consumed by despair.
Destruction is a common theme. Tsunamis are extremely powerful and cause widespread damage, and this is often depicted vividly in these fictions. For example, the destruction of homes, buildings, and entire communities.
A common theme is self - improvement. Characters often use the knowledge from their past lives to better themselves in their new lives. For example, they might study harder, learn martial arts more efficiently, etc.
One main theme could be the physical and mental development of humans over time. It might explore how early humans evolved from more primitive states to the complex beings we are today. Another theme could be the impact of environmental factors on human evolution, like how changes in climate or available resources shaped our species.
Sure. 'The Time Machine' by H.G. Wells can be considered as one. It shows the evolution of the human race in the future. The Eloi and the Morlocks have evolved in different ways due to their environments.