In an eco-system, all animals and insects are important. Since there is no picture, I'll descibe what would happen. If a keystone species went missing or extinct, shortly after the rest of the ecosystem will callapse. The bird population would decrease because lack of food, shelter or environment, then those who feed on birds will slowly decline, then worms or insects that the bird was keeping in check, overpopulate. This can have disaterous consequences, not only for this specific ecosystem but for any.
More elephant seals and peguins would be eating (killing) the squids. Also it might not realy change at all because the squid has much more krill and small animals to eat.
Hi recent research on the type A behavior pattern suggests that the *Hostility* subcomponent is the best predicator of subsequent cornet heart disease. Hope this helps you. Please help me by saying brainliestor or by saying thanks.