It would sometimes signify the unity of two separate kingdoms
Answer:
Explanation:
Desalination is an important source of water supply for Singapore. With the Tuas desalination plant, we can meet up to 30% of Singapore's water needs. The Tuas desalination plant is the first in Singapore to use advanced pretreatment technology, a combination of dissolved air flotation and ultrafiltration.
D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
