Why was it important to examine both the color and the streak of your minerals? think about streak and explain why it’s called a mineral’s “true color”. answer in at least 2 sentences.

The streak is the colour presented by a mineral when put into powder, in other words, in its most isolated way. The colour of a mineral, when in a rock, may be influenced by its crystal conformation, other minerals in it, or even the cut. That's why, the streak is considered the "true colour" of a mineral. 

From our previous experiment, we examined how many drops a penny can hold - and place drops of salt water on the penny after recording 5 trials each, take the average of each solution.

The answer is lymph sinuses.