the blue whales did not die
30,000,000,000 blue whales
the blue whales would die or become exticted
They don't because then they will have no energy and then die.
By having babies because blue whales are being extinckt so, by having babies there would be more of them By having babies because blue whales are being extinckt so, by having babies there would be more of them
they will be extinct, which means that they will not exist
Blue whales are so big that killing them "humanely" - meaning fast and painlessly - is difficult. Blue whales breed slowly, meaning that any hunting can easily reduce the population. Blue whales are probably quite intelligent as animals go, and may form long-lasting relationships with others of their species. Their upset when family members die may be comparable to ours. Blue whales are no longer actually needed for human consumption. Those items we used to get from whales can now be functionally replaced with materials from other sources.
Really they do not effect them. This is the main threats used to be whalers which to some are described as pirate but that is not a pirate is meant by the majority. The only kind of threat is to if they collided with one as blue whales can die from ship collisions is ships are not careful.
Blue whales can live for 80 to 90 years. No blue whales are being killed now. Hunting of the blue whale stopped in 1977. Now, the blue whale's only predator is the orca, or killer whale (actually a type of dolphin). Almost a quarter of blue whales have scars from orca attacks, but the blue whale's size (up to 120 tonnes and 60 metres [200 ft] long, bigger than any of the dinosaurs) suggests they are difficult to kill. There is no information on how many are killed by orcas.
If they slept at all they would die
They aren't actually blue thy just call them that
indirectly, so the blue whale eats something that ate somethin that ate something that got poisoned by air pollution
By definition it would be renewable, assuming you're OK with the idea of hunting whales. In practical terms it doesn't matter, as there aren't enough whales to support regular harvesting.