Questions

Air pollutants are solid particles, gases, and liquid droplets in the air that can adversely affect ecosystems and the health of humans.

Major ambient air pollutants include toxic metals, polycyclic aromatic hydrocarbons, benzene, particulate matter (PM), nitrogen oxides, sulfur oxides, carbon monoxide, and ozone. Power plants, factories, and vehicle and air traffic are the most important anthropogenic sources of air pollution.

In addition, natural sources such as wildfires and volcanic activity contribute to ambient air pollution.

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Oligopoly is market structure where a small number of large firms are there. Oligopolistic industries are characterized by a few dominant firms and substantial entry barriers.

The National Basketball Association (NBA) announced the launch of NBA Basketball School, a network of tuition-based basketball development programs around the world open to international male and female players ages 6-18 in Mumbai.

There are six permanent members: China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Uzbekistan. Soon India and Pakistan will also join it.

Nigeria, an African country on the Gulf of Guinea. 

Nigeria has a Federal Republic and Presidential system of Government.