Random question?

Which change will occur in the wire of an electrical circuit that is working properly?

Random question?

Some nonnative plants can adapt to their environments more quickly than some native plants or crops can. Which adaptation would least likely help a nonnative plant to survive in a new environment?

Random question?

What precaution must be taken by students when making observations of the Sun?

Random question?
Which pair of elements has the most similar properties?