Read the excerpt from a science text.

In our experiment, we filled two identical glasses with water. To one glass, we added two tablespoons of salt and stirred. To the other glass, we added four drops of food coloring and stirred.

This excerpt is most likely to be found in which part of the scientific text?

a)introduction
b)methods
c)results
d)conclusion

What does the process of natural selection involve

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %