Fire is important because it cooked food, provided light and provided heat
Iron rich minerals in rock pointed in one direction the switch to the exact opposite direction. I'd say that what supports this idea is that <span><u>Earth's magnetic field goes through pole reversals.</u></span>
The correct answer is<span> A composite volcano, rhyolitic magma, and plinian explosion
</span> What composite means is that there was a lot of lava around it that cooled and overtime the more lava there was the more it layered around and created the comoposite volcano. That is because there's a lot of lava at its eruption. The violent explosion is plinian because it goes high into the air with a lot of smoke and matter in it.
The correct answer is - A. Desertification is increasing, and the desert is expanding.
The Sahara desert has been expanding in the past decades, and it has started to overtake territory south of it. This is mainly due to climate changes, the precipitation has been decreasing, the temperatures have been rising, so the desert has slowly crippled into the territories that were once steppes and savannas. There is an organized action from the people that leave on the borderline of the desert, where they have been thought some techniques as to how to stop the desert growing, and they have gladly accepted it and work hard on it. Initially it seems that there are positive results, but for sure only the time will tell.
