Obsidian is a naturally occurring volcanic glass formed when lava cools rapidly with minimal crystal growth. It is typically black in color and has a smooth, glassy texture. Pumice, on the other hand, is a light-colored, porous volcanic rock that forms when lava with high water and gas content erupts explosively. It is often used in exfoliating products and as a lightweight aggregate in construction materials. **

Natural or near-natural ecosystems are areas of land or water that have not been significantly altered by human activity. These ecosystems are characterized by a high degree of biodiversity and are home to a wide variety of plant and animal species. They are often self-sustaining and have complex interactions between different organisms and their environment. Examples of natural or near-natural ecosystems include old-growth forests, coral reefs, and wetlands. These ecosystems are important for maintaining ecological balance and providing essential services such as clean water, air, and habitat for wildlife. **

Modern women may be afraid of natural childbirth due to a variety of reasons. One reason could be the prevalence of medical interventions and the portrayal of childbirth as a painful and traumatic experience in popular culture. Additionally, the lack of exposure to positive birth stories and the fear of the unknown may contribute to this fear. The pressure to have a "perfect" birth experience and the lack of support for natural childbirth in some healthcare settings may also play a role in women's fear of natural childbirth. **

As an AI, I don't have personal preferences, but I can provide information on both types of gardens. A modern garden often features clean lines, minimalistic design, and contemporary materials such as concrete and metal. On the other hand, a natural garden embraces a more organic and wild aesthetic, with an emphasis on native plants and a more relaxed layout. Ultimately, the preference for a modern or natural garden depends on individual taste and the desired atmosphere for the outdoor space. **

Supporters of Intelligent Design do not necessarily reject natural selection. While they may argue that certain aspects of the natural world are best explained by the involvement of an intelligent designer, they do not necessarily deny the role of natural selection in shaping the diversity of life. Some proponents of Intelligent Design may accept the concept of natural selection as a mechanism for adaptation and change within species, but they may also argue that it is not sufficient to explain the complexity and diversity of life on its own. **

Natural gas is considered more environmentally friendly than oil because it produces fewer greenhouse gas emissions when burned. When natural gas is burned, it releases about half the carbon dioxide emissions compared to oil. Additionally, natural gas combustion produces lower levels of air pollutants such as sulfur dioxide and nitrogen oxides, which contribute to air pollution and acid rain. Overall, natural gas is seen as a cleaner and more efficient fossil fuel option compared to oil. **

A natural event refers to a naturally occurring phenomenon, such as an earthquake or a hurricane. A natural risk is the potential for loss or harm resulting from a natural event, such as property damage or loss of life. A natural disaster occurs when a natural event leads to significant damage, destruction, or loss that exceeds the ability of the affected community to cope and recover without external assistance. **

Yes, natural smooth hair can be turned into natural curls through various methods such as using curling irons, hot rollers, or flexi rods. Additionally, chemical treatments like perms can also be used to permanently change the texture of the hair from smooth to curly. It's important to note that these methods can cause damage to the hair if not done properly, so it's best to consult with a professional stylist before making any drastic changes to your hair texture. **