I believe filtration is the first step in treating lake water.
Hope this helps!!
D! Copper (Cu), Gold (Au), and Silver (Ag) are the most similar. These three are all transition metals, and are found in the same group, 11 or 1B. Due to the fact that these guys are all in the same group they're going to have the same number of valance electrons and similar properties.
"The centre of the earth is harder to study than the centre of the sun." Temperatures in the lower mantle the reach around 3,000-3,500 degrees Celsius and the barometer reads about 125 gigapascals, about one and a quarter million times atmospheric pressure."
Answer:
70mins
Explanation:
i don't have one I just know