Answer: Overfishing in the main location that bluefin tuna are caught, the Mediterranean. They are being caught before they can reproduce (very low reproduction rate)
Work and study hard, don't worry about anything else except for natural needs, don't study all night because it wouldn't be easier, you need your sleep too. And just try to do your best. My step mom is said something about having to go back to a school for nursing and stuff, it isn't a college, its more of a VoTech school for all kinds of things. I hope I helped
Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide. It exchanges these gases with the atmosphere to keep a balance between the ocean and the atmosphere. This exchange is helped by the mixing of the surface by wind and waves.
The answer to that question is no