-The green house effect: Some gases in the atmosphere trap the heat and doesn't allow it to scape making the Earth warmer.
-Human activity: The industrial activities have increased the carbon dioxic levels that have contributed to the higher temperatures. Also, deforestation, fluorinated gases and fertilisers containing nitrogen have contributed to climate change.
The correct answer is A. reeducation camps. This is because reeducation camps are camps to which people are forcibly taken while the others are practices of traditional Chinese medicine.
Mafic minerals are usually dark in color and have relatively high specific gravities (greater than 3.0). ... Felsic minerals are usually light in color and have specific gravities less than 3.0. Common felsic minerals include quartz, muscovite mica, and the orthoclase feldspars.
