What is the ratio of al** ions to s ions in a neutral compound? 1: 1 2.1 2: 3 3: 2

Do you have any options?

Answerthe same as;

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.