Sagot :
Answer:
1.B
2.B
3.A
4.B
5.B
6.C
7.C
hope it help's
Answer:
1.)"B".Chlorine kills pathogens such as bacteria and viruses by breaking the chemical bonds in their molecules.
2.)"D" RADICAL SYMBOL:
"Na+"
3.)"D". Viruses. Viruses are acellular microorganisms, which means they are not composed of cells.
4.)"B".Electric Current is the flow of electrons through a wire or solution.
5.)"B" 2:1,The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1
6.)"C".A greenhouse (also called a glàsshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glàss.
7.)"C",In a series circuit, the current is the same at each resistor.
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