On this day in 1517, the priest and scholar Martin Luther approaches the door of the Castle Church in Wittenberg, Germany, and nails a piece of paper to it containing the 95 revolutionary opinions that would begin the Protestant Reformation
The answer is B) Inca. Extensive road network across plains, deserts and mountains reaching all corners of the empire was one of the notable features of the Inca empire like terraced farming, canals, crop rotation and irrigation as agricultural innovations. It allowed smooth military operations, trading, and the use of runners or chasquis.
temperature and amount of rainfall
Answer:
Human activity - Produces greenhouse gasses.
Greenhouse gasses - Cause atmosphere to trap more heat.
Sun's output - Can vary.
Ice age - Peaked 20,000 years ago.
Explanation:
Human activity includes the usage of fossil fuels on a very large scale, and by using them we release huge amounts of greenhouse gasses into the atmosphere.
The greenhouse gasses have the ability to trap the heat that is reflected from the surface of the planet, thus keeping more of it in the atmosphere and causing global temperature rise.
The sun is technically a star, thus an object that produces energy and light, and like every star, it has variations in its activity in accordance with the processes going on on it.
There have been numerous ice ages through the geological past, and the last one of them ended only around 10,000 years ago, with its peak being just 20,000 years ago.
