What are two processes that scientists use to develop scientific theories and laws?
Test ideas and explanations through repeated investigations.
Take a vote to fairly represent as many different views as possible.
Evaluate the methods and empirical evidence many times.
Consult many different people's wishes, beliefs, and opinions.

the answer is 0.42 is that is an option. this question provides no info

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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