Answer: Coagulation and flocculation are often the first steps in water treatment. Chemicals with a positive charge are added to the water. The positive charge of these chemicals neutralizes the negative charge of dirt and other dissolved particles in the water.
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Answer:
B. South Africa, from 1948 to 1994 to separate races.
Explanation:
Before Nelson Mandela came to power on 1994 South Africa was known for Apartheid.
ANC or African Nationalist Congress was struggling to free South Africa from the British colonial rule, Apartheid and racism which became true when Nelson Mandela came to power.
Apartheid was also characterized by 'Minority rule'
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That it would take light 7.4 years to travel through space.
Answer:Information from deep-ocean exploration can help predict earthquakes and tsunamis and help us understand how we are affecting and being affected by changes in Earth's environment.
Explanation:
Ocean exploration can improve ocean literacy and inspire young people to seek careers in science, technology, engineering, and mathematics.
