Like, where 4 canyons are located at? Alright then...
Grand Canyon - Arizona
Palo Duro Canyon - Texas
Bryce Canyon - Utah
Three Gorges - China
Well, From what i know... WWR started in September 1, 1939 because Germany invaded Poland and the U.K and France declared on Germany to protect Poland
The inner core is solid because it is made of very dense, or heavy, materials - like iron and nickel. Even though it is very hot, these materials don't "melt" very easily, so they stay solid. Also, pressure due to the weight of the mantle and crust, atoms are forced together as solid.
If trees are nature's lungs, then the Amazon, being the biggest and least explored rain forest in the whole World, is the Earth's whole respiratory system. Trees use carbon dioxide and produce oxygen, which means they clean the air. If the Amazon is being ruined and no trees are replaced with new ones, and factories are being built instead, this means that humans contribute to air pollution, leading to disastrous consequences for the whole flora and fauna, climate change and altogether influencing humanity.
Answer:
The states that composed the Central American Federation (also referred to as the Federation of the Centre of America) were the states known today as Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua. These areas declared independence from Spain on September 15, 1821. In 1810, the Mexican War of Independence began when Catholic priest Miguel Hidalgo y Costilla proclaimed the Grito de Dolores, which was a call to open revolt. A revolt also broke out among Creole groups in El Salvador in 1811. ... On September 15, 1821, Central America officially gained independence from Spain.
Explanation:
Mark me brainly please