Quais os nomes das mudanças de estado físico da matéria e qual a importância de conhecer e estudar essas transformações?

They can measure  the amount of energy gained or lost

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.

The answer will be +250

This is called a hybrid.