The earliest introduction of zebra mussels in united states probably occurs in 1986.
At that time, commercial vessels from Europe went to north America as a place for freshwater ballast stowaway. They merchants then introduced zebra mussels to the market and it gained popularity ever since. They also introduced zebra mussels population in local lakes and let them reproduce there.
Answer:
formative quizzing
Explanation:
The formative questionnaires present questions that are not intended to test an individual, but rather to present concepts and information that can extend and help the student's process of understanding about a certain subject. This type of questionnaire is built taking into account the needs that the student presents with regard to academic knowledge hurting the classes, or to concepts that are presented in a more complex way.
I think fasting during Ramadan if i'm not mistaken... Or Hajj
