Which of the following families contain elements that can be used to fill lightbulbs and cause them to glow brightly when exposed to an electric
current?
Metalloids
Alkaline earth metals
Noble gasses
Halogens

Idon't know hope someone you

Ithink that’s it’s b

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.