Answer:1. Yes, there are magma of different composition in existence. silicate mineral become molten at the same temperature of 1200 degree centigrade in igneous rock formation and this does not stop the composition of magma which are of three types basalic, andesitic and rhyolitic each of them have different composition ranging between iron, magnesium and calcium.
2. Partial melting is the reason why we have different forms of rock, this is because the mantle is composed of different minerals, these minerals doesn't melt uniformly, a mineral with low melting point will turn to liquid while the one with high melting point will turn to solid crystals. As the magma melts and flow slowly before it cools into solid rock it undergoes some physical and chemical changes which causes differences in the rock formed.
3. The last question depends on ever individual's location, where i am i can easily go and see granite at a mining site that deals with construction rocks which is an example of igneous rock.
Anemometers measure wind speed<span> and wind vanes measure wind direction. A typical wind vane has a pointer in front and fins in the back. When the wind is blowing, the wind vane points into the wind. For example, in a </span>north<span> wind, the wind vane points northward.
</span>mark me as brainliest if I helped:)
Answer:
Landforms: There are three distinct landforms of the Southeast and of North Carolina: the Coastal Plain, the Piedmont, and the Appalachian Mountains. The Coastal Plain is low, flat to gently sloping land that extends along the Atlantic Ocean and the Gulf of Mexico.
Answer:
There are 54 countries in Africa, today.
Explanation:
