Overfishing has caused the Blue fin tuna's population to. A. grow
B. decrease rapidly
C. migrate to other areas
D. be protected in fish farms

Easy question, but wanna make sure i get it right!

According to the article about the zhou dynasty, this dynasty was broken into different eras because its capital changed from place to place. how many different eras were there in the zhou dynasty? a. two b. six c. ten d. fourteen