Q: Answer the question

A student pours a clear liquid from a test tube into a beaker with a clear liquid already in it and notices that the mixture turns pink. The student infers the two clear liquids are different. This inference is a result of

A: student observations.

Q: Answer the question

Which of these features of Earth's crust are caused by the shifting of tectonic plates?

A: mid-ocean ridges

Q: Answer the question

When a multicellular organism is damaged, it will repair itself as

A:
the cells work together.