The Roe River, located in Montana, USA, has been cited in various records as the shortest river in the world. It flows between Giant Springs and the Missouri River. While the measurement of river length can be subject to debate due to seasonal changes and definitions of river sources, the Roe River has historically held this distinction in many general knowledge references and record-keeping sources used for academic testing.

The Congo River basin is widely considered to have the world's greatest hydroelectric potential. This is due to the river's massive discharge volume and the significant elevation drops along its course, particularly at the Inga Falls. These geographical features allow for the generation of vast amounts of renewable energy, far exceeding the potential of many other major river systems globally.

The Roe River, located in Montana, USA, has historically been cited in various record books and general knowledge references as one of the shortest rivers in the world. While river length measurements can be subject to debate based on hydrological definitions, the Roe River remains a frequently cited example in trivia regarding geographic superlatives due to its remarkably short course between Giant Springs and the Missouri River.

The Pacific Ocean is the largest and deepest ocean on Earth. It contains the Mariana Trench, which includes the Challenger Deep, the lowest point on the planet's crust. Its vast size and complex tectonic structure contribute to it having the greatest average and maximum depths of all the world's oceans.

March 21st is officially designated by the United Nations as the International Day for the Elimination of Racial Discrimination. This date was chosen to commemorate the 1960 Sharpeville massacre in South Africa, where police opened fire on peaceful demonstrators protesting against apartheid 'pass laws'. It serves as a global reminder of the ongoing struggle to combat racism and racial prejudice worldwide.

To find the ratio, both quantities must be in the same units. Converting 3.5 kg to grams gives 3,500 grams. The ratio is 3,500:280. Dividing both sides by their greatest common divisor, 140, we get 25:2.

To find the simplest ratio of boys to girls, write the numbers as a fraction: 16/12. Divide both the numerator and the denominator by their greatest common divisor, which is 4. This results in 4/3, or a ratio of 4:3.

Islam is currently the second-largest religion globally, following Christianity. It is one of the fastest-growing religions in the world, with a significant presence across the Middle East, North Africa, and parts of Asia. The ranking is based on demographic data and census reports regarding religious affiliation worldwide.

Venus possesses a very dense atmosphere primarily composed of carbon dioxide, which accounts for about 96.5% of its atmospheric volume. This high concentration of carbon dioxide creates a runaway greenhouse effect, making Venus the hottest planet in the solar system.

The winter solstice occurs annually around December 21 or 22. On this day, the North Pole is tilted furthest away from the Sun, resulting in the shortest period of daylight and the longest night of the year for all locations in the Northern Hemisphere.