1.

Scientists DO NOT base their knowledge about a subject on .

ideas

evidence

observations

2.

Scientists collect evidence by making of the world around them.

opinions

observations

good guesses

3.

In the wild, we can observe animals and collect about their behaviors.

data

hypotheses

opinions

Ideas, observations, and dat

Explanation:

answer: mercury

explanation:

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.